Our People
The O2X team is comprised of U.S. Special Operations veterans, first responders, elite athletes, and a continually growing network of human performance specialists who are subject matter experts and leaders in their respective fields.
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Gabriel Gomez

Gabriel Gomez
Gabriel Gomez is the Co-Founder and Chief Executive Officer of O2X Human Performance, where he leads the organization’s overall strategy, growth, and operational direction. As CEO, Gabriel oversees all facets of the business, guiding the company through continued expansion while maintaining a strong focus on mission alignment, operational excellence, and long-term sustainability. He works closely with executive leadership to drive strategic growth initiatives, manage enterprise risk, strengthen partnerships, and advance O2X’s position as a leader in integrated human performance solutions for tactical athletes and high-performance organizations. In addition to overseeing day-to-day business operations, Gabriel leads investor relations and financial strategy efforts that have supported the company’s significant year-over-year growth. As one of O2X’s founding members, he has played a critical role in every stage of the company’s development — from its original formation and startup phase through its rapid national expansion and evolution into a trusted provider of human performance programs across military, federal, public safety, and industrial sectors.
Prior to founding O2X, Gabriel built a successful career in private equity and investment management, working with firms including Advent International, Summit Partners, and Bowles Hollowell Conner. He also co-founded Equality Asset Management, where he focused on investment strategy and business growth initiatives. In 2013, Gabriel stepped away from Advent International to run for the United States Senate seat vacated by John Kerry, ultimately winning the Republican nomination in the Massachusetts special election. Before his business and political career, Gabriel served as both a Naval Aviator and Navy SEAL Officer after graduating from the United States Naval Academy. He later earned his MBA from Harvard Business School. Gabriel holds a unique place in U.S. Naval history as only the second individual to qualify as both an aircraft carrier pilot and a Navy SEAL Officer, a distinction that reflects the discipline, adaptability, and leadership that continue to shape his approach today.
Beyond his professional responsibilities, Gabriel remains deeply committed to supporting the military and veteran communities. He is a co-founder of the Navy SEAL Foundation New England and previously served as a Trustee for Noble & Greenough School. Outside of work, Gabriel enjoys spending time with his family, staying active, and supporting causes connected to leadership development, service, and resilience. He lives in Cohasset, Massachusetts with his wife and four children.

Paul McCullough

Paul McCullough
Paul McCullough is the Co-Founder and President of O2X Human Performance, where he helps lead the organization’s strategic growth, client engagement, and long-term vision. Since co-founding O2X in 2013 alongside Adam La Reau and Gabriel Gomez, Paul has played a central role in shaping the company’s mission, culture, and industry-leading human performance model. As President, he focuses on ensuring O2X’s products, programs, and services are positioned to create meaningful impact across military, federal, public safety, and other high-performance organizations. Driven by a deep passion for supporting those who serve others, Paul remains committed to improving the health, readiness, resilience, and performance of tactical populations nationwide.
During O2X’s formative years, Paul led the company’s business development efforts and helped build the customized human performance platform that now supports hundreds of organizations across the United States. He was instrumental in adapting O2X’s methodology to meet the unique operational demands of each client, helping develop many of the programs, services, and solutions that continue to define the organization today. Prior to co-founding O2X, Paul served eleven years in the United States Navy as a Navy SEAL with SEAL Team Eight and Naval Special Warfare Development Group. Throughout his military career, he conducted multiple combat deployments in support of Operation Iraqi Freedom, Operation Enduring Freedom, and other contingency operations around the world. Paul separated from military service as a Chief Petty Officer and received numerous awards for valor and leadership, including the Silver Star Medal, two Bronze Star Medals with Valor, and two Joint Service Commendation Medals with Valor. Following his military career, Paul worked on the Institutional Sales Team at Eaton Vance Investment Managers before leaving to pursue entrepreneurship and fully dedicate himself to advancing human performance through O2X.
Paul earned his Bachelor of Arts in Marketing from American Military University and continues to remain deeply connected to the tactical and veteran communities. Outside of work, he enjoys spending time with his wife and four children, staying active, and pursuing opportunities that challenge both physical and mental performance. His leadership philosophy continues to reflect the same principles that shaped his military career — discipline, service, resilience, and a commitment to helping others perform at their highest level.

Adam La Reau

Adam La Reau
Adam La Reau is the Co-Founder and President of O2X Human Performance, where he plays a key leadership role in guiding the organization’s strategic growth, operational direction, and long-term vision. Since co-founding O2X in 2013 alongside Gabriel Gomez and Paul McCullough, Adam has been instrumental in building the company into a nationally recognized leader in integrated human performance solutions for tactical athletes and high-performing organizations. In his role as President, Adam helps oversee the continued evolution of O2X’s programs, partnerships, and operational initiatives while ensuring the company remains aligned with its mission of improving the health, safety, readiness, and resilience of those who serve others.
Throughout O2X’s growth, Adam has played a foundational role in developing the organization’s operational infrastructure and translating elite human performance principles into scalable, real-world solutions for military, federal, public safety, and industrial populations. His leadership has helped shape the systems, services, and educational methodologies that continue to define O2X today. Prior to founding O2X, Adam served in the United States Navy as a Navy SEAL, where he operated in demanding, high-performance environments that required discipline, adaptability, teamwork, and resilience. His experiences in Naval Special Warfare heavily influenced the development of O2X’s holistic approach to human performance, emphasizing the integration of physical training, nutrition, sleep, recovery, stress management, and injury prevention to support long-term operational effectiveness and overall well-being.
Adam remains deeply passionate about leadership, performance, and supporting the tactical community through sustainable human performance initiatives. Outside of work, he enjoys staying active, spending time outdoors, and being with his family and friends. His leadership philosophy reflects the same principles that shaped both his military and professional career — service, accountability, continuous improvement, and a commitment to helping individuals and teams perform at their highest level.

John Vargo

John Vargo
John Vargo serves as the Senior Vice President of Municipal Sales at O2X Human Performance, where he leads the organization’s municipal sales strategy and supports the development of impactful human performance programs for state and local government agencies nationwide. In his role, John works closely with municipal leadership teams, public safety organizations, and strategic partners to expand O2X’s presence within the fire service, law enforcement, and other tactical communities. Leveraging his operational experience, leadership background, and business development expertise, he helps create customized solutions that improve the health, safety, resilience, and performance of first responders and public sector professionals.
Prior to joining O2X, John completed a distinguished 20-year career with the Chandler Fire Department in Arizona, where he served as an Engineer Paramedic. Throughout his fire service career, he remained heavily involved in leadership and advocacy efforts, serving as an IAFF Union Representative, an Apparatus Committee Member, and co-founding the Chandler FireFighter Athletic Association, which supported firefighter participation in the World Police and Fire Games. In addition to his public safety background, John spent 15 years working in real estate and also served as an Investment Adviser Representative (IAR), helping clients and peers navigate asset diversification, portfolio management, and retirement planning strategies. Following his retirement from the fire service, John founded Turn In, a nonprofit organization focused on introducing mindfulness and meditation practices to first responders, and became a recognized keynote speaker on mental wellness, resilience, and stress management within the tactical community.
In 2019, John became an mPEAK-certified instructor through the University of California San Diego Center for Mindfulness and later contributed as an instructor for the Chopra Global 21-Day Business Kickstarter in 2022. Outside of work, John enjoys maintaining an active lifestyle through running, hiking, mountain biking, snowboarding, and yoga. He resides in San Diego, California with his wife and is a proud father of three adult children and grandfather of two.

Blake Brinkerhoff

Blake Brinkerhoff
Blake Brinkerhoff serves as the Senior Vice President of Federal Sales at O2X Human Performance, where he leads the organization’s federal sales initiatives and supports the integration of human performance programs across U.S. government agencies. In his role, Blake oversees the federal sales team, focusing on strategic business development, relationship management, client retention, and long-term partnership growth within the Department of Defense and broader federal sector. Drawing on his tactical experience and leadership background, he works closely with agency stakeholders to ensure O2X programs are aligned with operational demands and mission readiness objectives.
Blake’s professional foundation was built during his 12-year career as a Navy SEAL, where he completed three deployments supporting operations in more than 20 countries. Serving with SEAL Team 4, Blake held leadership positions including Lead Breacher and Assault Team Leader, where he managed high-risk operations requiring precision, adaptability, and decisive leadership. In the later stages of his military career, he became the Lead Instructor for Close Quarters Combat at SEAL Qualification Training, where he trained and mentored more than 300 SEAL candidates annually, helping develop the next generation of Naval Special Warfare operators. His operational experience and passion for leadership, resilience, and performance continue to shape his approach to supporting federal clients and tactical populations through O2X.
Blake earned his degree in Organizational Leadership while serving on active duty and later completed the Master of Business for Veterans (MBV) program at the University of Southern California. Outside of work, he enjoys spending time with his wife and three children in Oceanside, California. An avid outdoorsman, Blake is passionate about surfing, spearfishing, and staying connected to the ocean, pursuits that reflect the same commitment to discipline, resilience, and performance that define both his personal and professional life.

Jason Carver

Jason Carver
Jason Carver serves as the Senior Vice President of Strategic Partnerships at O2X Human Performance, where he leads federal business development efforts focused on strategic opportunities across the Department of Defense, Department of Homeland Security, and other federal agencies. In this role, Jason works closely with government stakeholders, industry partners, and internal leadership teams to identify, capture, and implement opportunities that expand O2X’s integrated human performance model to tactical populations nationwide. His work centers on building long-term partnerships that improve readiness, resilience, and performance for those operating in high-demand environments.
Prior to joining O2X, Jason served 21 years in Naval Special Warfare as a Navy SEAL, holding leadership positions across SEAL Teams, Special Reconnaissance units, and multiple command staffs throughout his career. He completed his service at Basic Underwater Demolition/SEAL Training (BUD/S), a full-circle opportunity that allowed him to help shape and mentor the next generation of Special Operations personnel. Throughout his military career, Jason developed a deep appreciation for the role that physical training, nutrition, sleep, recovery, injury prevention, and mental resilience play in operational effectiveness and long-term health. In addition to his military experience, Jason co-founded Outlier CrossFit in San Diego, where he helped grow the business into a successful performance and training community, sponsored a competitive team at the CrossFit Games, and later exited the business successfully.
Jason brings decades of leadership experience in high-performance environments and remains passionate about advancing human performance within the tactical community. Based in San Diego with his wife and two sons, he continues to pursue endurance and outdoor challenges through mountain biking, snowboarding, hiking, and trail running. Most recently, Jason completed the JFK 50-Mile Ultramarathon alongside fellow O2X teammates.

Robert Kelly

Robert Kelly
Rob Kelly is the Senior Vice President of Commerical Partnerships at O2X Human Performance, where he specializes in building strategic partnerships and supporting clients’ unique operational needs. Leveraging his extensive military background and deep understanding of Department of Defense operations, along with corporate industry experience, Rob implements performance programs tailored to the demands of military and federal agencies, municipal departments, and private-sector organizations. His work focuses on delivering innovative solutions that enhance warfighter readiness, improve operational efficiency, and drive measurable success for the teams he serves.
Rob served 11 years as a Surface Warfare Officer in the United States Navy, completing multiple overseas deployments aboard operational warships. Throughout his service, he held key leadership roles including Visit, Board, Search, and Seizure (VBSS) Boarding Officer, Damage Control Assistant, Weapons Officer, and Combat Systems Officer, while also leading ship navigation operations worldwide. He graduated from the United States Naval Academy and later earned a Master of Business for Veterans (MBV) from the USC Marshall School of Business.
Originally from Coronado, California, Rob developed a passion for surfing and lacrosse and earned the rank of Eagle Scout. He now resides in Charleston, South Carolina with his wife and three children and enjoys surfing, training Jiu-Jitsu, and creating memorable experiences with his family.

Zack McAdams

Zack McAdams
Zack McAdams serves as the Senior Vice President of Training & Education at O2X Human Performance, where he oversees the organization’s in-person and virtual training and education programs delivered to tactical and high-performance populations worldwide. Bringing more than a decade of experience as a tactical athlete and military leader, Zack manages all aspects of O2X’s training operations, including specialist staffing and development, event planning, client coordination, logistics, equipment forecasting, inventory management, budget oversight, and operational execution. His leadership helps ensure the consistent delivery of O2X’s world-class programs and educational offerings, supporting hundreds of events globally each year while advancing the organization’s mission to improve the health, safety, and performance of those who serve others.
Prior to joining O2X, Zack served in the United States Army as both an enlisted Soldier and an Officer, retiring as a Major. Throughout his military career, he held leadership positions within the 101st Airborne Division, the University of Massachusetts, the 25th Infantry Division, and the 10th Mountain Division. These roles spanned operations, logistics, training, advising, and command leadership. Zack deployed multiple times to Afghanistan and concluded his Army career serving as both an Operations Officer and Executive Officer, responsible for planning, resourcing, and synchronizing operations for an 800-soldier infantry battalion. Following years of combat and operational service, Zack medically retired from the Army in July 2022 due to career and combat-related injuries, an experience that further strengthened his passion for human performance, career longevity, and supporting the long-term well-being of tactical athletes. His operational experience and leadership background continue to shape the way he approaches training, education, and program delivery at O2X.
Zack earned his bachelor’s degree from Bridgewater State College and later completed his master’s degree through the U.S. Army Command and General Staff College. He currently resides on the South Shore with his wife, Jen, and their daughter, Delaney. Outside of work, Zack values time with his family, staying active through endurance events, and remaining engaged within his community. His dedication to leadership, service, and improving the lives of others continues to make him a respected leader within O2X and the broader tactical human performance community.

Ryan Lassila

Ryan Lassila
Ryan Lassila is the Senior Vice President of Finance at O2X Human Performance, where he oversees the organization’s financial health and supports strategic growth initiatives. In his role, Ryan leads key functions across financial planning and analysis (FP&A), accounting, and corporate development, helping guide O2X’s financial strategy and long-term growth.
Ryan brings more than 15 years of experience in finance and strategy leadership, having worked across multiple Fortune 100 companies as well as growth-stage organizations. He earned his bachelor’s degree in Business Administration from California Lutheran University and his MBA from the University of Florida’s Warrington School of Business.
Originally from Los Angeles, Ryan recently relocated with his family to the Charlotte, North Carolina area. Outside of work, he enjoys spending time on the water boating with his family, playing tennis, and staying active with his local F3 group.

Ali Levy

Ali Levy
Ali Levy is the Vice President of Sales Operations at O2X Human Performance, where she brings more than a decade of experience in the human performance industry. In her role, Ali works cross-functionally to develop systems, processes, and strategies that allow the sales team to focus on revenue generation, client retention, and successful program implementation. As one of O2X’s founding team members, she has played a key role in shaping the company’s growth, internal operations, and long-term alignment with its mission and core values.
Throughout her time at O2X, Ali has held several leadership positions across the organization. As Director of Education, she collaborated with leading researchers and subject matter experts to build customized educational programs for clients and contributed to O2X’s published works, including co-authoring Human Performance for Tactical Athletes and contributing a chapter to Surviving the Fire Service. Prior to that, as Director of Operations, she oversaw the logistics and execution of O2X’s nationwide in-person training programs. Drawing from her background as a Mental Performance Specialist, Ali has also delivered sessions focused on resilience, goal setting, and performance psychology. Before joining O2X, Ali competed on the U.S. Freestyle Ski Team, where she became a two-time North American Cup Grand Prix Champion and competed internationally at the World Cup level.
After retiring from competitive skiing, Ali earned her Bachelor of Arts in Geography from Middlebury College, where she also competed in track and field, before completing her Master of Education in Sport Psychology and Counseling at Boston University. In 2015, she was inducted into the Ski & Snowboard Club Vail Hall of Fame and Wall of Excellence in recognition of her athletic accomplishments. Outside of work, Ali continues to pursue endurance and outdoor challenges, including completing a 1,100-mile cycling trip and multiple 50-mile ultramarathons, while maintaining her lifelong passion for skiing and spending time outdoors.

Dan Hartig

Dan Hartig
Dan Hartig serves as the Vice President of Engineering and Digital Products at O2X Human Performance, where he leads the development and execution of the organization’s digital strategy and technology platforms. In his role, Dan oversees engineering, software architecture, and product development efforts that support O2X’s digital ecosystem, including tools and platforms designed to enhance performance, readiness, and long-term health for tactical athletes, first responders, and frontline professionals. Bringing a background in engineering, architecture, and technical leadership, Dan focuses on building scalable, secure, and innovative software solutions that align with the evolving needs of O2X clients and internal teams. His experience leading multidisciplinary teams and refining software development lifecycles has helped strengthen O2X’s ability to deliver high-quality digital products that support operational excellence and user engagement.
Dan’s professional background spans both military service and the private technology sector. He initially enlisted in the United States Marine Corps in 2002 following the events of 9/11 before being selected for an officer candidate program in 2004. Dan later graduated from the United States Naval Academy as a Trident Scholar with a degree in Computer Science in 2008 and went on to serve as a Nuclear Surface Warfare Officer aboard USS Robert G. Bradley (FFG-49) and USS George H. W. Bush (CVN-77). Following his military service, Dan transitioned into software engineering and technology leadership roles, beginning with work supporting the intelligence community at Zeta Technologies. He later held engineering and leadership positions with organizations including PricewaterhouseCoopers, Sezzle, and Best Buy, where he gained extensive experience implementing large-scale technology solutions across startup, enterprise, and national retail environments. His diverse technical and operational background continues to shape his leadership approach and vision for digital innovation at O2X.
Dan resides in Minneapolis, Minnesota with his wife, Darray, and their five children. Outside of work, he enjoys spending time with family, serving his community, and pursuing his passion for cooking and barbecue. Known for smoking meats for large gatherings, holiday parties, and church events, Dan jokingly considers award-winning pit master to be his future retirement career. His enthusiasm for bringing people together through food reflects the same leadership, creativity, and team-oriented mindset that he brings to his work at O2X.

Meaghan Kirby

Meaghan Kirby
Meaghan Kirby serves as the Vice President of Education at O2X Human Performance, where she collaborates with leading researchers, subject matter experts, and internal teams to develop customized, integrated education programs for tactical athletes and high-performance organizations. In her role, Meaghan oversees educational strategy, organizational reporting, and data analysis initiatives designed to measure and communicate the impact of O2X’s programs and services. She leads the development of detailed reporting systems and client deliverables that demonstrate the effectiveness of O2X’s Integrated Specialist Programs, workshops, and educational events, helping agencies better understand performance outcomes, program engagement, and long-term impact.
Throughout her time at O2X, Meaghan has held multiple leadership positions across both the Education and Client Services departments. As the Education & Reporting Manager, she partnered closely with teams throughout the organization to build customized reporting frameworks and data-driven insights that highlighted the value and effectiveness of O2X programming. Prior to that role, she served as the Client Services Manager, where she helped lead educational content development, improve reporting systems, and strengthen client communication and support processes. Her work has been instrumental in enhancing the quality, consistency, and impact of O2X’s educational offerings while ensuring agencies receive professional, actionable, and meaningful program feedback. Meaghan’s passion for supporting tactical populations is deeply personal and rooted in her family’s long-standing connection to public service and first responder communities.
Meaghan earned both her Master of Education in Coaching and Bachelor of Science in Psychology from Boston University. While at Boston University, she competed as a distance swimmer on the BU Swimming and Diving Team and was also a USA Swimming Senior National Qualifier in distance freestyle and backstroke events. Her dedication to health, wellness, and performance continues outside of work, where she remains passionate about supporting first responders and tactical professionals. Meaghan’s family history includes multiple generations of public service, including a great-grandfather who served as a firefighter in Lowell, Massachusetts, a grandfather who was a Captain with the Massachusetts State Police, and a cousin currently serving as a police officer in Boxborough, Massachusetts. Her work with O2X allows her to combine her professional expertise with a meaningful commitment to supporting the health, resilience, and well-being of those who serve others.

Lorenzo Romolo

Lorenzo Romolo
Lorenzo Romolo is the Vice President of Human Performance Integration at O2X, where he created and developed the HPI department to ensure the seamless implementation of O2X programs within client organizations. In this role, he oversees client relationships, contracts, and national program delivery, with a focus on ensuring measurable impact across all sectors. He also leads oversight of On-Site Specialists, data analytics, impact tracking, and customer service, ensuring human performance initiatives are effectively integrated and consistently delivering results for O2X clients.
Lorenzo began his career with O2X as a Lead Instructor, where he leveraged his operational experience to deliver training and education events for first responders, federal agencies, and military personnel. He was later promoted to On-Site Specialist Program Manager, where he helped build and manage the deployment of human performance specialists, and then advanced to Director of Client Services, playing a key role in expanding O2X programs across military, law enforcement, fire service, and DOJ/DHS partnerships. His leadership was instrumental in establishing O2X as a trusted partner in human performance across these critical sectors.
Originally from Australia, Lorenzo retired from Special Operations Command Australia after a distinguished 15-year military career. As a Special Forces Operator, he deployed to Afghanistan, Iraq, and East Timor, working alongside U.S. Special Operations and other coalition forces. He also served in domestic counterterrorism roles and worked with Australia’s Joint Counter Terrorism and Tactical Police, as well as the FBI Hostage Rescue Team (HRT).

Crystal Vidas

Crystal Vidas
Crystal Vidas serves as the Vice President of People Operation at O2X Human Performance, where she leads the organization’s people strategy and oversees all human resources and administrative functions across the company. In her role, Crystal helps drive the systems, structure, and operational processes needed to support O2X’s continued growth while maintaining a high-performance, people-centered culture. Over the past 18 months, her role has continued to evolve alongside the organization, expanding beyond traditional HR leadership into broader operational strategy, organizational development, workforce planning, compliance, compensation strategy, and large-scale recruiting efforts across both headquarters and embedded tactical performance programs nationwide. She plays a key role in aligning people operations with company growth initiatives while helping leaders build scalable teams, improve internal processes, and maintain O2X’s mission-driven culture. Crystal also oversees recruitment, onboarding, and development efforts for many of the organization’s operational and leadership roles, helping attract and retain high-performing professionals across a wide range of disciplines.
Before joining O2X, Crystal spent six years with lululemon, where she led multiple stores throughout the Philadelphia region and ultimately supported the successful opening of a new store in Delaware. During her time with the company, she consistently exceeded sales and operational targets while building strong employee engagement and community relationships. Prior to transitioning into leadership and operations, Crystal spent the first decade of her career as a Certified Athletic Trainer, working across Oregon, Virginia, California, and Taiwan. One of her most impactful professional experiences was helping establish and lead a sports medicine program at Taipei American School, where she built a multidisciplinary support system designed to meet the unique needs of student-athletes. Her background in healthcare, athletics, leadership, and performance continues to shape her approach to people operations and organizational development at O2X.
Crystal earned her Bachelor of Science in Exercise Science from Oregon State University and her Master of Science in Education through the Post Professional Athletic Training Education Program at Old Dominion University. Outside of work, she remains deeply involved in fitness, performance, and outdoor adventure. A longtime competitive CrossFit athlete, Crystal has competed at the regional level three times and has recently shifted her focus toward age-group CrossFit competition while also participating in events such as The Tactical Games and ultramarathon racing, including completing a 50-mile race in 2025. One of her most notable endurance accomplishments was completing an unsupported rim-to-rim-to-rim crossing of the Grand Canyon with her husband in 16.5 hours. Outside of training and competition, Crystal enjoys spending time outdoors with her family and creating new adventures with her husband and their three boys, ages 9, 5, and 2.

Brendan Stickles

Brendan Stickles
Brendan Stickles serves as the Vice President, Government at O2X Human Performance, where he oversees federal government accounts and supports the organization’s strategic growth within the Department of Defense and broader federal sector. In his role, Brendan works closely with government leaders, agency stakeholders, and internal teams to develop partnerships and deliver human performance solutions that support readiness, resilience, and operational effectiveness. Drawing on his extensive military and national security background, Brendan helps align O2X’s programs and services with the evolving needs of federal agencies and tactical populations.
Brendan joined O2X in September 2023 following his time as a consultant with Boston Consulting Group. Prior to that, he served at the White House as the Special Advisor for Defense to Vice Presidents Kamala Harris and Mike Pence, where he managed a broad portfolio that included national security, veterans’ issues, defense innovation, military readiness, and personnel policy. During his tenure on the National Security Council as Director for Defense, Brendan worked across multiple government agencies to support strategic defense initiatives and senior leadership decision-making. Before transitioning into government advisory roles, Brendan served more than two decades in the United States Navy as a Naval Aviator and Commander. Over the course of his military career, he flew jets for more than 18 consecutive years and completed over 550 aircraft carrier landings. On his final operational deployment aboard USS Dwight D. Eisenhower, he commanded an EA-18 squadron that earned back-to-back “Battle E” awards recognizing combat efficiency during Operation Inherent Resolve. Among his most memorable personal experiences as a pilot was performing the 2008 Major League Baseball Opening Day flyover for his favorite team, the New York Mets.
Originally from Glen Rock, New Jersey, Brendan graduated from the United States Naval Academy with a degree in History before earning both an MBA from the University of North Carolina and a Master of Public Administration from Harvard University. He currently resides in Bethesda, Maryland with his wife and their three school-aged children. Outside of work, Brendan enjoys spending time with family, staying connected to the military and veteran communities, and supporting initiatives that strengthen leadership, readiness, and service.

Cole Hatcher

Cole Hatcher
Cole Hatcher serves as an Assistant Vice President of Municipal Sales at O2X Human Performance, where he supports the development and management of human performance programs for local government and public safety organizations nationwide. In his role, Cole leverages his tactical background, leadership experience, and operational expertise to build strong client relationships, support program implementation, and ensure long-term client success and retention. He works closely with agencies to develop customized solutions that align with their operational demands and organizational goals, helping tactical professionals improve readiness, resilience, and overall performance.
Prior to joining O2X, Cole served as a Special Agent focused on investigations involving gang violence, firearms offenses, and narcotics trafficking. Before transitioning into federal law enforcement, he spent four years on active duty in the United States Army as a Sergeant with F Company, 51st Long Range Surveillance Company, where he served as part of a military freefall team. Throughout his military career, Cole trained soldiers in surveillance operations, reconnaissance tactics, and physical fitness while also fostering partnerships with allied military forces. He completed several advanced military schools and certifications, including the Reconnaissance and Surveillance Leaders Course (RSLC), Pathfinder School, and the Military Freefall Parachutist Course (MFFPC). His combined military and federal law enforcement experience continues to shape his passion for supporting tactical professionals through performance-focused programs and leadership development.
Cole earned his degree in Accounting from the University of Arizona and has also worked in accounting and finance roles throughout his professional career. Originally from Arizona, he maintains a strong connection to the outdoors and enjoys spending his free time traveling, hiking, visiting the beach, and competing in trail races and local CrossFit competitions. His passion for adventure, fitness, and continuous growth reflects the same mindset he brings to his work supporting public safety and tactical organizations through O2X.

Ryan Solley

Ryan Solley
Ryan Solley is the Assistant Vice President of Municipal Sales at O2X, supporting municipal agencies in building readiness, resilience, and long‑term human performance. He spent over a decade in the U.S. Army, with the majority of that time serving in Army Special Forces as a Green Beret. Throughout his career, he completed multiple deployments and held leadership roles centered on team development, training, and operational performance.
After transitioning from the military, Ryan spent two years with the National Guard Human Performance and Wellness Program, where he helped stand up and lead their Strength and Conditioning Program. He later earned a master’s degree in Human Performance and has since applied his operational and academic background to coaching, leadership development, and performance optimization across tactical and civilian populations.
Ryan lives in Florida with his wife and two children, staying active through outdoor adventures, travel, and community involvement.

Alex Zuchman

Alex Zuchman
Alex Zuchman is an Assistant Vice President of Federal Sales at O2X, where he draws on his leadership experience and operational background to deliver tailored human performance solutions to clients that improve efficiencies, readiness, and resilience - and drive mission success. In his role, he implements performance programs tailored to the unique demands of military and federal agencies, municipal departments, athletic teams, universities, and private-sector organizations.
Prior to joining O2X, Alex served as a federal agent for over twenty years where he was recognized at the local, national, and international level for his work. Alex served as an undercover agent, investigator, supervisor, and commander of the Crisis Negotiation Team. Alex also served as the Homeland Security liaison at the U.S. Embassy in Paris, France for five years. Of note, Alex is the recipient of the Director of National Intelligence Medal and the French Law Enforcement Medal of Honor. Prior to his civilian work, Alex served as a Marine Ground Intelligence officer until 2004; he worked at the battalion and regimental levels and ended his tour at the Joint Intelligence Center, Counter-Terrorism section. His leadership philosophy continues to reflect the same principles that shaped his career in service; accountability, continuous improvement, and a commitment to helping individuals and teams perform at their highest level. Alex is a graduate of the University of Pittsburgh and the University of Pittsburgh School of Law.
Outside of work, Alex is passionate about nonprofit work, inspiring kids, and wrestling. Alex lives in Philadelphia, with his wife, Maia and their three children.
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Jordan Smith
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Jordan Smith
Jordan Smith is an Assistant Vice President of Federal Sales at O2X, where he draws on his leadership experience and operational background to deliver tailored human performance solutions to federal clients. In his role, he builds and maintains relationships with government agencies and implements performance solutions that improve resilience, strengthen readiness, and drive mission success.
Prior to joining O2X, Jordan attended the United States Military Academy at West Point, where he played defensive end for the Army Football Team and graduated in 2017 before commissioning as a Field Artillery Officer. Over his eight years of Army service, he held a variety of leadership roles, including Platoon Leader, Fire Support Officer, and Battery Executive Officer with the 1st Brigade, 1st Armored Division at Fort Bliss, Texas, as well as Battery Commander with the 434th Field Artillery Brigade at Fort Sill, Oklahoma. He concluded his military career as a Team Leader with the Defense POW/MIA Accounting Agency in Hawaii, where he led global recovery missions throughout Southeast Asia, Europe, and China in search of U.S. service members who remain unaccounted for from past wars and conflicts.
Originally from Oceanside, California, Jordan and his wife are raising their two children in their hometown community. Passionate about fitness and the outdoors, he enjoys strength training, surfing, and spending time with his family.

Rachel Miller

Rachel Miller
Rachel Miller is the Assistant Vice President, Operations at O2X. In this capacity, she manages the staffing, planning, travel, and execution of O2X’s programs throughout the year. Rachel oversees a network of over 250 O2X subject matter experts and instructors, ensuring seamless operations for each event. She is committed to building strong relationships, growing the O2X family network, and fostering a positive and rewarding work environment for current staff, creating a culture of support and collaboration.
Before joining O2X, Rachel worked in the Events and Experiences team at Fenway Sports Management, the sports marketing agency of the Boston Red Sox and Fenway Sports Group. In her role, she managed fan travel experiences, corporate events, and brand activations for several FSG entities and partners, including the Boston Red Sox, Texas Rangers, Washington Nationals, Liverpool F.C., Jim Beam, Dunkin’, and the Red Sox Foundation. Her diverse experience in sports marketing and event management gave her a strong foundation in large-scale event coordination. Rachel also holds a Master’s Degree in Broadcast Journalism with a sports focus from Boston University, where she completed her undergraduate degree in Journalism.Rachel was a standout member of the Women’s Soccer team at Boston University, where she was a two-time captain, two-time All-Patriot League selection, and three-time Patriot League Champion. Her dedication to sports extended beyond her college career, as she traveled to Uganda with Coaches Across Continents to promote the power of sport for social impact. After her soccer career, Rachel ran the Boston Marathon to raise funds for the Boston Bruins Foundation, igniting her passion for running and endurance training. Born and raised in South Shore, MA, Rachel is a member of the East Bridgewater High School Athletics Hall of Fame for her achievements in soccer and track and field.
In her free time, she enjoys spending time with her family, dog, and exploring the outdoors.

Crystal Schurko

Crystal Schurko
Crystal Schurko serves as a Senior Front End Engineer at O2X Human Performance, where she focuses on web and mobile application development, building intuitive user experiences and implementing new features that enhance the functionality and accessibility of O2X’s digital platforms. In her role, Crystal works closely with engineering, product, and design teams to create seamless user-centered solutions that support tactical athletes, coaches, and organizational leaders. Drawing on her strong operational background, she also plays an important role in refining agile development processes and improving collaboration across teams to support efficient product delivery and continuous platform improvement.
Prior to joining O2X, Crystal held software engineering leadership roles across the healthcare, publishing, and technology industries. She served as a Lead Software Engineer at Florida Blue and Banyan Hill Publishing, where she led development efforts focused on scalable web applications and user-focused digital experiences. Earlier in her career, she worked in client-facing software development roles at MercuryWorks and gained experience in embedded systems engineering with Magic Leap. Throughout her career, Crystal has built expertise in frontend engineering, agile methodologies, and product-driven development, allowing her to effectively bridge technical execution with business and user needs. She also maintains a strong passion for continuous learning and professional development, earning certifications across areas including full-stack web development, embedded systems, and modern frontend frameworks such as React and Next.js, while also participating in and winning multiple hackathons.
Outside of work, Crystal enjoys reading, research, and design, and is constantly exploring new technologies and creative outlets to expand her knowledge and skills. She lives in South Florida with her husband and two daughters, where she enjoys balancing her passion for technology with family life and personal growth.

Daniel Velez

Daniel Velez
Daniel Velez is a Senior Mobile Engineer at O2X, where he leads the development of high-performance mobile applications that drive forward the company’s mission to optimize human performance. With a foundation in business and a passion for technology, Daniel brings a strategic mindset to mobile engineering, creating seamless and intuitive user experiences that meet real-world needs.
Prior to joining O2X, Daniel played key roles at companies such as Reggora, Dragon Army, and TrueNorth, where he contributed to the design and deployment of impactful mobile solutions across diverse sectors. His strengths lie in solving complex technical challenges, writing clean and maintainable code, and fostering strong collaboration across teams. Daniel made the leap into tech in his late twenties and has since carved out a path defined by growth, curiosity, and a relentless drive to improve. His work reflects a deep commitment to learning and pushing the boundaries of what’s possible in mobile development.
Outside of engineering, Daniel is a dedicated enthusiast of combat sports and soccer, and enjoys any challenge that pushes him to grow, both personally and professionally.

Jeremy Petronella

Jeremy Petronella
Jeremy Petronella is the Senior Product Manager at O2X Human Performance, leading the strategy, design, and development of the company’s digital products that support tactical athletes and the organizations that rely on them. He blends product leadership with real-world operational insight to create tools that are intuitive, resilient, and mission-ready. Jeremy works cross-functionally with internal teams and end users to ensure O2X’s digital solutions enhance readiness, performance, and long-term well-being across the tactical community.
Before joining O2X, Jeremy built a career at the intersection of public safety, technology, and human performance. He previously shaped product direction for Active911’s nationwide emergency alerting platform, designing tools used in high-stress, time-critical environments. His perspective as both a product leader and an end user is grounded in more than 25 years of fire service experience spanning operations, training, and readiness development. In addition to his service background, Jeremy is a longtime fitness entrepreneur who has owned and operated two CrossFit gyms—including one in Cabo San Lucas, Mexico—where he coached athletes and developed programming tailored to elite performance and tactical demands.
Jeremy’s approach is rooted in a lifelong commitment to learning, human performance, and community. He and his wife, Kari, live in Oregon with their dog, Murph, where they stay connected to the outdoors and an active lifestyle that fuels their passion for health and performance. Outside of his work at O2X, Jeremy continues to pursue education, coaching, and personal development initiatives that strengthen his ability to serve the tactical population.

Joey Lee

Joey Lee
Joey Lee is a full-stack software/product engineer at O2X, where he leads the technical design and development of the O2X Coach's Portal web application. While splitting his time among mobile, back-end, and front-end feature work, Joey specializes in collaborating with product and design to shape and launch user-focused solutions end-to-end.
Prior to O2X, Joey held mid- through staff-level software engineering positions at organizations including Amazon, Florida Blue, and several fast-growing venture-backed startups from seed through Series D stage. These experiences gave him a broad perspective on designing, building, and scaling software products across diverse environments and team structures.
Joey studied computer science from high school through college and completed a Software Engineering Immersive at Hack Reactor. Outside of work, he has wide range of hobbies and interests — from Socratic philosophy, psychology, and mindfulness meditation to classical piano and jazz improvisation to barbell training to web novels. He lives with his wife and kids in St. Johns, Florida.

Ashley Roberts

Ashley Roberts
Ashley Roberts is the Manager of Recruiting and Talent at O2X, where she plays a key role in supporting the People Operations team. Her primary responsibility is attracting top-tier talent to O2X and guiding candidates through an efficient and engaging interview and onboarding process. In addition to talent acquisition, she also supports employee engagement and development across departments, helping to build and sustain a high-performing, mission-driven team as the organization continues to grow.
With over eight years of experience as a Certified Athletic Trainer, Ashley has worked across a wide range of environments, including secondary schools, collegiate athletics, military settings, and industrial performance roles. Her passion for serving military personnel and veterans is deeply personal, as she is the spouse of a Marine veteran. This connection fuels her commitment to the mission and strengthens her dedication to supporting those who serve. Prior to her current role, she contributed to hiring and onboarding athletic trainers and worked as an industrial athletic trainer, further expanding her expertise across multiple sectors.
Ashley holds a Master of Science in Athletic Training from the University of Central Oklahoma, providing a strong clinical foundation for her work in both human performance and talent strategy. Outside of work, she enjoys staying active through fitness, outdoor adventures such as boating, and spending time with her family, including her daughter and two beloved pit bulls. Her energy, work ethic, and commitment to others make her a valued member of both O2X and the broader community.

Joe McCullough

Joe McCullough
Joe McCullough serves as the Manager of Marketing at O2X Human Performance, where he oversees the planning, development, and execution of the company’s marketing initiatives and brand strategy. In his role, Joe manages a wide range of content and communication efforts, including social media campaigns, email marketing, public relations, the O2X Human Performance Podcast, and the company’s blog and digital storytelling initiatives. His work plays an important role in advancing O2X’s mission, educating audiences on the value of human performance, and strengthening engagement across tactical, military, public safety, and high-performance communities. Through both strategic planning and creative execution, Joe helps communicate the impact of O2X’s programs, people, and mission nationwide.
Before joining O2X, Joe attended the United States Merchant Marine Academy after receiving a conditional appointment and completing a preparatory program at the New Mexico Military Institute. While at Kings Point, he was involved in leadership and extracurricular initiatives, serving as a 3/C Petty Officer to the Regimental Commander, sailing as a cadet aboard the S.S. Horizon Pacific, and helping found the Kings Point Endurance Club. In June 2016, Joe sustained a cervical spinal cord injury that initially left him quadriplegic. Following months of intensive rehabilitation and therapy, he regained significant function and independence through relentless determination, resilience, and adaptability. His experiences overcoming adversity continue to shape both his personal perspective and professional approach. Joe’s background in the Maritime Logistics and Security Program, combined with the leadership and problem-solving skills developed during his recovery journey, laid the foundation for his career growth at O2X. Since joining the organization, he has held multiple roles including Operations Coordinator and Experience Coordinator before transitioning into his current position leading marketing initiatives.
Outside of work, Joe remains passionate about personal growth, resilience, and inspiring others through his journey of recovery and perseverance. His experiences have given him a unique perspective on adaptability, mental toughness, and the importance of community support. Through both his professional contributions and personal story, Joe continues to embody the values of resilience, purpose, and continuous improvement that are central to the O2X mission.

Daniel Williams

Daniel Williams
Daniel Williams serves as the Manager of Integrated Programs for O2X Human Performance on the West Coast, where he supports the implementation, oversight, and continued development of integrated human performance programs for tactical populations. After beginning his career with O2X as an On-Site Human Performance Specialist specializing in Strength & Conditioning, Daniel has continued to expand his leadership responsibilities while supporting embedded specialists and operational programs across multiple client sites. In his role, he works closely with tactical organizations and O2X personnel to ensure programs are effectively aligned with mission demands, operational readiness goals, and long-term performance outcomes for the populations they serve.
With more than 12 years of experience in the human performance field, Daniel has dedicated much of his career to supporting tactical athletes and Special Operations communities. Since 2015, he has worked directly within the special operations environment as a Human Performance Specialist, helping operators improve strength, durability, resilience, and overall operational readiness. Daniel began his work in the tactical space with Air Force Special Operations Command, supporting the 24th Special Operations Wing and the Special Tactics Training Squadron (STTS). Following his time with STTS, he transitioned to Naval Special Warfare Group 1, where he spent more than four years working alongside Navy SEALs and supporting human performance initiatives focused on optimizing performance and reducing injury risk within elite operational units. His extensive experience embedded within high-performance tactical environments continues to shape his practical and mission-focused approach to coaching and leadership.
Daniel remains deeply passionate about helping tactical professionals achieve sustainable, long-term performance success both physically and mentally. His hands-on experience within elite military communities, combined with his leadership within O2X’s Integrated Programs, has made him a trusted resource for both specialists and tactical organizations alike. Through his work, Daniel continues to support O2X’s mission of improving the health, readiness, and resilience of those operating in demanding environments.

Mark Christiani

Mark Christiani
Mark Christiani serves as the East Coast Human Performance Integration (HPI) Manager for O2X Human Performance, where he supports, develops, and mentors On-Site Specialists across multiple contracts and locations. In this role, Mark helps integrate comprehensive human performance programs focused on strength and conditioning, injury prevention, recovery, and long-term readiness for tactical and industrial populations. He works closely with both leadership teams and embedded specialists to ensure programs are operationally effective, sustainable, and aligned with client mission requirements.
Prior to stepping into his current leadership role, Mark worked as an On-Site Human Performance Specialist supporting the United States Army Reserve 81st Readiness Division, where he delivered strength and conditioning support designed to improve Soldier readiness, physical performance, and resilience while reducing injury risk. Before joining O2X, Mark served as the Brigade Lead Strength and Conditioning Coach for the U.S. Army’s Holistic Health and Fitness (H2F) Program with the 44th Medical Brigade at Fort Bragg, where he led the development and implementation of large-scale performance initiatives across multiple battalions and installations. During his time in the H2F program, he helped build Brigade-level strength and conditioning systems, oversaw new soldier performance initiatives, supported the distribution and integration of wearable technology, and contributed to data collection and performance analysis efforts. Earlier in his career, Mark worked in collegiate strength and conditioning at Savannah State University and the University of South Carolina, primarily supporting football and track and field athletes. His introduction to tactical strength and conditioning began during his time serving in the U.S. Army with 1st Battalion, 75th Ranger Regiment while preparing for Ranger School.
Mark brings more than a decade of experience in tactical and collegiate human performance and remains passionate about continuous growth as both a coach and leader. He earned his Master of Science in Sports Medicine from Georgia Southern University and his Bachelor of Science in Kinesiology and Health from Iowa State University. Mark is a Certified Strength and Conditioning Specialist (CSCS) and Registered Strength and Conditioning Coach (RSCC) through the National Strength and Conditioning Association. Outside of work, he enjoys competing in and coaching powerlifting, spending time at the beach, and continuing to refine his cooking skills.

Dave Burke

Dave Burke
Dave Burke serves as the Operations Coordinator at O2X Human Performance, where he plays a key role within the Operations department supporting the execution of O2X’s nationwide programs, events, and embedded specialist initiatives. In his role, Dave manages logistics and operational coordination for workshops, training events, and on-site programs, helping ensure that O2X personnel and equipment are fully prepared to support clients across the country. His responsibilities include organizing and overseeing shipping operations, maintaining equipment readiness, and supporting the systems and processes that allow O2X programs to operate efficiently at scale. As the organization continues to grow, Dave remains heavily involved in improving operational workflows, identifying creative solutions, and strengthening the consistency and professionalism of the O2X experience.
Prior to joining O2X, Dave worked as a manager at a local beach in Cohasset, Massachusetts, where he collaborated closely with first responders, emergency management personnel, and local fire and police departments. During this time, he developed and implemented safety procedures, coordinated operational planning efforts, and introduced fitness initiatives designed to improve team readiness and performance in a dynamic public safety environment. His experience managing operations and leading teams in high-responsibility settings helped build the leadership, organization, and problem-solving skills he now applies in his role at O2X. Dave’s passion for teamwork, preparedness, and operational excellence continues to drive his contributions to the organization and its mission.
Dave earned his Bachelor’s degree in Entrepreneurship in May 2022 and is currently pursuing his MBA at Lasell University. While attending Lasell, he was a two-time captain of the Men’s Lacrosse team, leading the program to a Greater Northeast Athletic Conference Championship while earning multi-year all-conference recognition and finalist honors for Defensive Player of the Year as a Short Stick Defensive Midfielder (SSDM). Raised on the Massachusetts South Shore, Dave remains passionate about competition, teamwork, and outdoor adventure. Outside of work, he enjoys traveling, surfing, spending time with family and friends, and being outdoors with his three dogs.

Joshua Stuart Shor

Joshua Stuart Shor
Josh Stuart-Shor is a Manager of Integrated Programs and Workshop Lead for O2X, where he leads the delivery and execution of human performance programs for tactical athletes and client organizations. In this role, Josh drives program effectiveness through strategic engagement, on-site leadership, and close partnership with clients to ensure high-impact implementation and sustained results. As a trained mediator and facilitator, he brings a deliberate, people-centered approach to strengthening organizational culture, improving communication, and enhancing overall team performance.
Prior to joining O2X, Josh served in the United States Army as an Infantry Officer in the 82nd Airborne Division before earning his Green Beret and going on to serve in the 3rd Special Forces Group at Fort Bragg, NC. During his military career, he led and operated in complex environments across multiple combat deployments to Iraq, Afghanistan, and Central Asia, earning numerous awards and decorations for his service. From 2015 to 2016, Josh participated in the Army’s Tactical Human Optimization Rapid Rehabilitation & Reconditioning Program (THOR3) while recovering from combat-related injuries—an experience that shaped his long-term commitment to human performance, resilience, and recovery.
Following nearly a decade of service, Josh transitioned from the military to continue his leadership in high-performance environments. In addition to his work with O2X, he serves as a Lieutenant in a major metropolitan fire department, where he leads teams in dynamic, high-stakes situations. Josh holds a Master’s degree in Conflict Resolution from the University of Massachusetts Boston and applies that expertise to lead, develop, and support individuals and organizations in achieving sustainable performance outcomes.
He resides in Boston, MA, with his wife, Jessica, their four children—Camden, Abigail, Harrison, and Anne—and their dog, Buck. Outside of work, Josh and his family enjoy skiing, hiking, and fly-fishing in the mountains of Vermont

Alyssa Cafarelli

Alyssa Cafarelli
Alyssa Cafarelli serves as the Content & Education Coordinator at O2X Human Performance, where she works cross-functionally with multiple departments to support the development and delivery of high-impact educational resources, marketing materials, client reports, and digital content. In her role, Alyssa helps ensure that O2X’s educational and communication materials effectively support tactical athletes, first responders, and high-performance organizations by delivering clear, engaging, and mission-focused content. Her collaborative approach and attention to detail play an important role in helping O2X maintain consistent, professional, and impactful resources across both internal and client-facing initiatives.
Prior to joining O2X, Alyssa worked as a preschool teacher for six years, where she developed a strong passion for education, communication, and helping others learn and grow. Her experience in the classroom strengthened her creativity, organization, and ability to connect with diverse audiences — skills that continue to support her work within O2X’s Education and Content teams. Alyssa also comes from a family deeply connected to the tactical community, which has fueled her personal connection to O2X’s mission of supporting those who serve others. Her combined background in education, communication, and content development has helped her become a valuable contributor to the organization’s efforts to educate and support tactical populations nationwide.
Alyssa earned her Bachelor’s degree in Communications and Media from Plymouth State University, where she graduated Magna Cum Laude and was inducted into the Communications National Honors Society, Lambda Pi Eta. During her time at Plymouth State, she further developed her passion for health, wellness, and digital media while creating content for the university’s recreation department. Outside of work, Alyssa remains passionate about supporting the tactical community and continues to find inspiration in the dedication and service of first responders, military personnel, and those who protect and serve their communities.

Elmer Diaz

Elmer Diaz
Elmer Diaz serves as the Creative Content Specialist at O2X Human Performance, where he produces high-quality visual and digital media content that supports the company’s mission and brand initiatives. In his role, Elmer develops engaging storytelling content across a variety of platforms, helping showcase the impact of O2X’s programs, people, and partnerships within tactical, military, public safety, and high-performance communities. His work includes capturing and producing photo and video content, supporting marketing campaigns, and creating visual assets that communicate the organization’s commitment to health, resilience, and performance. Through creative storytelling and strategic content development, Elmer helps strengthen O2X’s ability to connect with diverse audiences nationwide.
With more than five years of experience in media production and creative content development, Elmer has built a diverse professional portfolio spanning multiple industries and brands. Prior to joining O2X, he served as the Media Director at SoldierfitHQ, where he led multimedia production efforts and managed a wide range of visual storytelling projects. In addition to his full-time roles, Elmer has collaborated on freelance projects with nationally recognized organizations and brands including CBS Sports and lululemon, further expanding his expertise in video production, creative direction, and digital media strategy. His ability to combine technical production skills with authentic storytelling continues to play a valuable role in elevating O2X’s content and brand presence.
Elmer earned his Bachelor’s degree in Communication Arts from Hood College, where he developed a strong foundation in storytelling, media production, and visual communication. Outside of work, he enjoys exploring visual arts, watching films, and spending quality time with his family. His passion for storytelling, creativity, and meaningful connection continues to inspire both his professional work and personal pursuits.

Hugh Hamill

Hugh Hamill
Hugh Hamill is the Logistics Coordinator at O2X, where he is an integral member of the operations team. In this role, Hugh is responsible for managing the logistics and operational requirements for O2X Human Performance events and On-Site Specialists. He oversees the coordination, organization, packaging, and shipment of materials to various events across the country, ensuring everything is delivered on time and in perfect condition. Additionally, Hugh helps manage inventory and logistical needs at O2X’s headquarters, playing a key role in maintaining efficient operations.
Before joining O2X, Hugh gained valuable experience as a supervisor within the Intramural Athletic Board at Providence College, where he developed his passion for sports, health, and physical well-being. This role allowed him to gain leadership experience and further his interest in the logistics of athletic events. Hugh also worked as a marketing intern at a local bank on the South Shore of Massachusetts, where he honed his skills in communication and organizational support, contributing to his broad experience in both operations and marketing. Hugh graduated from Providence College in May 2023 with a major in marketing and a minor in sociology.
Growing up on the South Shore of Massachusetts, Hugh was an avid sports fan and played multiple varsity sports during his time at Marshfield High School. Outside of work, Hugh enjoys spending time with friends and family, skiing, and staying active outdoors. His love for sports and fitness continues to drive his personal and professional endeavors.

Ashley Tropea-Migrants

Ashley Tropea-Migrants
Ashley Tropea-Migrants is an Education & Curriculum Coordinator at O2X Human Performance, based in Massachusetts. In this role, she designs and implements educational programs that help tactical professionals enhance their performance, resilience, and recovery. Drawing on her background in human performance, injury prevention, and musculoskeletal care, Ashley specializes in translating complex medical and performance concepts into practical, engaging content that can be applied across a range of industries and audiences.
Before moving into curriculum development, Ashley served as an on-site Human Performance Specialist at O2X, where she worked directly with industrial athletes to optimize performance and reduce injury risk. Outside of O2X, she holds licensure and national certification as a Certified Athletic Trainer. She served as the sole Athletic Trainer at a high school for five years, during which she simultaneously worked in a hospital-based orthopedic and sports medicine clinic, splitting her time across both settings for four of those years. She later transitioned into a private orthopedic surgical clinic operating as the designated orthopedic department for a regional hospital, where she worked alongside surgeons, physical therapists, and occupational therapists across multiple specialties, gaining experience in musculoskeletal care, patient education, casting and bracing, durable medical equipment application, and movement screening.
Ashley earned her Bachelor of Science in Athletic Training from Bridgewater State University in 2015. Born and raised on Cape Cod, Massachusetts, she enjoys hiking with her dog, running, reading, and spending time with friends and family.

Kayla Stoneback

Kayla Stoneback
McKayla Stoneback serves as the Staffing and Travel Coordinator for O2X Human Performance, where she oversees staffing logistics and coordinates travel operations for company workshops, events, and nationwide engagements. In her role, McKayla works closely with internal teams, specialists, and partners to ensure efficient scheduling, travel coordination, and operational support across O2X programming. Drawing from her extensive background in tactical human performance and field operations, she brings a unique perspective to supporting both the people and logistical systems that drive successful program execution.
McKayla was O2X’s first embedded On-Site Specialist, joining the company in 2019 in support of Frederick County Fire and Rescue Services in Frederick, Maryland. Over the course of her career, she has spent more than nine years working within the tactical population, specializing in movement screenings, prehabilitation programming, tactical strength and conditioning, and comprehensive health and wellness initiatives for career fire departments. Prior to transitioning into her current role with O2X HQ, McKayla worked directly with tactical athletes to improve readiness, durability, and long-term performance outcomes. Her background in human performance began on the athletic side, where she worked with athletes of varying ages and competitive levels before expanding her focus into the tactical field. While completing her graduate education, McKayla conducted research focused on the relationship between the physical demands of firefighting and the fitness qualities required for operational performance, with her work ultimately being published.
McKayla earned her Bachelor of Science in Exercise Science with a minor in Nutrition before completing her Master of Science in Kinesiology and Outdoor Recreation: Sports Performance & Conditioning from Southern Utah University. In addition to her academic background, she is a certified Pregnancy & Postpartum Corrective Exercise Specialist and Athleticism Coach. Outside of work, McKayla enjoys spending time with her family and friends, being outdoors, and staying active alongside her husband, who serves as a career firefighter with the Saint Paul Fire Department. Together with their two young children, they enjoy activities including fishing, camping, hiking, hunting, and fitness.

Joey Tierney

Joey Tierney
Joey Tierney is a Federal Business Development Representative at O2X Human Performance, where he draws on his military leadership and human performance experience to develop client relationships and expand access to solutions that enhance readiness, resilience, and operational effectiveness. Having worked directly with military aviators and federal personnel, Joey brings a firsthand understanding of the role human performance programs can play in supporting individual well-being and mission success.
Prior to joining O2X, Joey served as an Aerospace Physiologist in the U.S. Air Force, specializing in aviation physiology, hypoxia recognition, and physiological training for military aircrew. At Joint Base San Antonio–Lackland, he served as a Contracting Officer’s Representative (COR) and supported the management and delivery of aircrew physiological training programs. He later served as a Human Performance Flight Commander at Holloman Air Force Base, where he led a multidisciplinary team of strength and conditioning coaches, physical therapists, and cognitive performance specialists supporting more than 700 F-16 and MQ-9 aviators. Following his military service, Joey transitioned into federal workforce health promotion at Hanscom Air Force Base. He is currently pursuing a Master of Public Health at Northeastern University.
Joey resides in Massachusetts and enjoys staying physically active, tackling home improvement projects, and spending time with his fiancée.

Chris Combado

Chris Combado
Chris Combado is a Federal Business Development Representative at O2X, where he draws on his military leadership and human performance experience to help expand O2X’s partnerships with federal agencies and tactical organizations. Having worked both within the military and directly alongside tactical populations, Chris brings a firsthand understanding of the demands placed on service members and the human performance resources that support readiness, resilience, and mission success.
Chris graduated from the United States Naval Academy in 2013 with a Bachelor’s degree in Economics and served eight years as a Surface Warfare Officer in the U.S. Navy. His assignments included serving aboard the USS Mobile Bay as a Strike Officer and Navigation Officer, completing an overseas tour in Bahrain with U.S. Naval Forces Central Command, and serving as the Tomahawk Weapon System Fleet Training Officer at Tactical Training Group Pacific in San Diego. Following his naval service, Chris earned his Master’s degree in Applied Physiology from the University of Colorado Colorado Springs. Prior to transitioning into his current role, he served as an O2X On-Site Human Performance Specialist supporting the U.S. Army Reserve’s 81st Readiness Division, providing strength and conditioning support focused on Soldier readiness, performance, resilience, and injury risk reduction.
Chris and his wife live in Temecula, California. Outside of work, he enjoys hiking, camping, hunting, and playing golf.
Specialists

Mara Hegmann

Mara Hegmann
Mara Hegmann is an O2X Lead Instructor and Yoga Specialist. Prior to joining O2X, Mara served at the Central Intelligence Agency for 35 years as an analyst, manager, and senior executive leader. She used her strong critical thinking and communication skills to help US policymakers expand their decision space and led numerous units through geopolitical, fiscal and personnel challenges. Throughout her career, Mara leaned into her passion for physical exercise to help her find balance and reduce stress, and in 2017 she completed her 200 RYT training. She teaches Vinyasa and Restorative classes in the Washington DC area and has a particular and personal interest in helping students engage in physical activity following injury and in dealing with age-related limitations. Mara has a Bachelor’s degree from Lafayette College and a Master’s degree from Georgetown University. In her spare time she enjoys cooking, hiking, and spending time with her husband (a former Marine) and her friends and family.

Micah Small

Micah Small
Micah J. Small is a Human Performance Specialist and Program Leader with more than 25 years of experience developing resilient teams, strengthening organizational readiness, and supporting high-performance professionals in demanding environments. His career spans global leadership roles in the U.S. Air Force, international program management, and human performance coaching, giving him a unique ability to integrate operational discipline with evidence-based performance strategies. Throughout his military and professional career, Micah has worked extensively with diverse populations, from tactical teams and veteran communities to international partners and organizational leaders. His background in leadership, behavior change, and human performance informs his holistic approach to readiness, emphasizing movement quality, recovery, stress management, and sustainable performance habits. Micah’s work is grounded in a deep commitment to service. His experience leading teams in high-pressure environments has shaped his belief that readiness and resilience are built through consistent habits, strong support systems, and mission-aligned coaching. This perspective aligns closely with O2X’s integrated approach to improving the health, safety, and long-term performance of tactical professionals. As a certified personal trainer and behavior change coach, Micah brings a science-based, relationship-driven approach to helping individuals and teams perform at their highest level. He is passionate about empowering those who serve, strengthening communities, and building systems that support long-term well-being. Outside of work, Micah enjoys staying active, exploring the outdoors, and spending time with his family and veteran community. His leadership philosophy reflects the principles that have guided his career: accountability, continuous improvement, and a commitment to helping others thrive.

Ray Norton

Ray Norton
Ray embarked on his journey in the fire service in 1987, initially as a volunteer firefighter at Tarpon Springs Fire Rescue in Florida, where he swiftly transitioned to a full-time role within a year. His commitment led him to become a certified paramedic in 1989. By 1994, he had moved to the Pinellas Suncoast Fire and Rescue District, culminating his tenure of 34 years in 2021 as a District Chief, entrusted with the pivotal responsibility of commanding and controlling incident operations and management. Throughout his career, Ray navigated various roles, including Driver Engineer, Lieutenant, Training Chief, and EMS Chief, while also lending his expertise to the Operations Chief position.
In parallel to his firefighting duties, In 1990 Ray began working at Bayfront Medical Center a Level 2 adult and pediatric trauma center to enhance his abilities as a medic. Shortly thereafter, Ray joined the esteemed crew of Bayflite, the hospital's aeromedical program renowned for its specialization in trauma response. Ray played a pivotal role in the program, which boasted the busiest trauma response helicopter in the nation, with an impressive 97% scene response rate. Additionally, he contributed to neonatal and pediatric transports for All Children’s Hospital. Ray assumed the role of a primary preceptor for the emergency room and Bayflite, shaping the next generation of medical professionals.
Beyond the confines of emergency response, Ray dedicated his off-hours to philanthropic endeavors alongside his wife. Together, they founded a nonprofit aimed at aiding combat veterans, wherein Ray served as the fitness and event coordinator. This organization offered alternative therapies to support veterans navigating post-traumatic stress disorder (PTSD) during their transition to civilian life, emphasizing stress management skills. Ray leveraged his expertise in martial arts, specializing in Kali stick and knife fighting, as a holistic approach to stress management and mindfulness. Recognizing the resonance of these modalities, Ray guided the program to extend its services to first responders with PTS/PTSD.
Ray's passion for holistic well-being extended to his lifelong devotion to martial arts. He is the proud owner of a martial arts school and a certified yoga instructor. Alongside his wife, Janel, Ray co-owned and managed Trinity Yoga Studio, where they extend their services to veterans and first responders. Their collaborative efforts span beyond the walls of the studio, Ray and his wife Janel work with several Veteran and First Responder organizations providing yoga and meditation to those populations. They also teach workshops to yoga instructors interested in working with Veteran and first responders. Notably, Ray and Janel co-teach at the National Veterans Summer Sports Clinic in San Diego, empowering over 120 adaptive athletes through adaptive yoga sessions. Janel and Ray sold Trinity Yoga on December 31, 2024, but continue this work with their new endeavor Alternative Stress Solutions.
Currently, Ray revels in retirement alongside his wife, as they embark on a new chapter in the serene landscapes of Eastern Tennessee. True to his ethos of service, Ray's retirement is characterized by a continued dedication to those who served, epitomizing a lifelong commitment to public service and holistic well-being.

Sara Davidson

Sara Davidson
Sara Davidson is an O2X Instructor with a background in military intelligence and operational leadership. She served in the U.S. Air Force as an intelligence analyst, leading teams in high-performance, high-stakes environments and deploying globally, including alongside a Special Operations team in the Middle East. Her experience spans complex decision-making, cross-functional collaboration with intelligence agencies, and executing missions in remote and dynamic conditions.
Sara holds a Bachelor of Science in Leadership and a Master’s Degree in Strategic Intelligence. Her work is grounded in a deep understanding of how people and systems perform under pressure, and how to build resilience that lasts.
Outside of her professional career, Sara lives what she teaches. Her approach to health, fitness, and performance is shaped not just by study, but by experience. She has taken on demanding endurance challenges around the world, from multi-day international events to self-supported ultra-distance efforts, consistently choosing environments that test both physical capacity and mental grit. She continues to compete in trail and road running, as well as CrossFit.
Based in in the United States, Sara embraces a minimalist, experience-driven lifestyle and spends much of her time exploring the outdoors. She is passionate about helping others unlock their full potential by building strength across the physical, mental, and emotional domains, with a strong emphasis on sustainable performance, nutrition, and long-term health.

Steven Prescia

Steven Prescia
Steve Prescia is a former U.S. Navy SEAL who has been a part of the special operations community for over 25 years. He served at SEAL Team One as an active-duty operator and reservist from 1993-2004. While pursuing his higher education in San Diego and serving at SEAL Team One reserves, Steve was a sponsored adventure athlete competing with some of the best athletes in the world. He placed respectively in Eco- Challenge Borneo in 2000 and Eco-Challenge New Zealand in 2001. After 9/11 he was given an opportunity to serve his country again but as an independent security contractor. In 2003, he was part of a special operations team providing protection in Afghanistan for the President Hamid Karzai. Later in 2004, he served again but this time in Iraq as a team leader for a diplomatic protection detail during “Operation Iraqi Freedom.” On this deployment, Steve sustained a devastating injury that almost took his life. Steve and his team were ambushed from an opposing force and he was shot in the leg while driving in the protection convoy. After a long recovery Steve went back to work as an instructor preparing former spec-ops personnel for protection operations in a combat area. In 2007, Steve found a passion in coaching and mentoring others to pursue a career in special operations. He served as the Navy’s Special Warfare Mentor in NY and NJ for 10 years. He was recognized as one of the top mentors for preparing our next generation of warriors in such a challenging time for our country. Currently, Steve is working as an independent contractor helping civilian organizations build high performing teams using his past experiences in the special operations community. Today Steve resides in Coronado California with his beautiful wife and they are focused on starting a family together. He enjoys everything on the ocean humbly pursuing a waterman’s life of surfing, spearfishing, paddleboarding, ocean swimming and sharing their love for the ocean with others.

Ryan Reynolds

Ryan Reynolds
Ryan Reynolds, is a Firefighter Paramedic at Orange County Fire Authority. After over a decade as a professional rugby player, Ryan quickly transitioned to being a Firefighter in 2019. Ryan was one of 3 females to successfully complete a 20 week career academy and a year of probation with no prior experience or education in firefighting or EMS. Ryan's proven success stems from consistency, hard work, and a continual willingness to learn. While still on probation, Ryan interviewed for Paramedic School and despite the hesitation demonstrated by her superiors, she was approved and graduated at the top of her class earning an Associates in Emergency Medicine and was one of the first to promote to Firefighter Paramedic from her class. Prior to firefighting, Ryan’s has a remarkable athletic background, having been an Olympian and professional rugby player for the U.S. National and Olympic Teams. Achievements include a 5th place finish at the 2016 Olympic Games, being named 7s Player of the Year by The Rugby Breakdown in January 2017, being recognized as one of Team USA’s most highly educated Olympians in 2016 and winning a Bronze Medal at the 2013 World Cup in Moscow, Russia. Ryan holds a B.S. in Sport & Entertainment Management from the University of South Carolina (2011), and earned her M.B.A. in International Affairs from DeVry's Keller Graduate School (2014) while training for the Rugby World Cup and 2016 Olympic Games. Ryan has helped several small businesses and CrossFit affiliates with their strategic marketing solutions, sales and membership retention. Most notably, Ryan assisted to rebrand an affiliate to have a 100% online presence crafted to build a female-empowered CrossFit community. Ryan's contributions included designing a new logo, redefining the mission of the brand, and rewriting the business plan. When she’s not helping on the backend of gyms, Ryan is also a CrossFit Coach, a nutrition coach, a weightlifting Coach, and a pregnancy and postpartum Athleticism Coach. Ryan is a peer fitness trainer for her fire department sharing her wealth of knowledge and and experiences in health and wellness with her brothers and sisters on the job as well as helping recruits prepare for interviews and the demands of the fire academy. Ryan currently lives in San Diego, CA. In her free time, she enjoys traveling, hiking, supporting her wife’s professional racing career and hanging out with their goldendoodle, Winston.

Lee Throckmorton

Lee Throckmorton
Carl “Lee” Throckmorton: In 2023, Lee retired from a 30-year career in public safety. He started his professional career with an Ocean Rescue Service in Southeast Virginia where he supervised up to 250 lifeguards per season. In 1997, Lee joined the fire department in Norfolk, Virginia. His fire service career spanned 26 years and included duties as a Paramedic, HazMat technician, and a founding member of the NFR Fitness Committee. He also spent 3 years as an arson investigator which allowed Lee to attend a Police Academy and participate in 6 months of Field Training with the Norfolk Police Department. His last assignment was as a Lieutenant on a busy ladder company in Midtown. In concert with his professional duties, Lee built a robust resume in strength and conditioning to include CSCS, TSAC-F, and CFFT alongside many other specialty courses. He also holds a Bachelors of Science from Old Dominion University. While working for both agencies, Lee had many opportunities to speak to members and recruits about the fitness/wellness needs of the tactical athlete. He continues to leverage his professional, educational, and practical experience to help tactical athletes exceed the physical and mental demands of public safety.

Michelle Sharp

Michelle Sharp
Michelle Sharp serves as an O2X Instructor and Yoga Specialist, bringing a diverse professional background grounded in leadership, service, and wellness. She previously served as a Judge Advocate in the U.S. Army, where she represented soldiers and provided legal counsel to commanders across multiple installations within the United States, as well as during two deployments to Iraq and Afghanistan. Following her military career, she was medically retired in 2024. Driven by a continued commitment to supporting others, Michelle is currently pursuing a Master’s degree in Education at William & Mary, working toward a specialization in Clinical Mental Health Counseling with a concentration in Military and Veterans. In addition to her academic pursuits, she is a certified yoga instructor teaching in Northern Virginia, where she resides with her husband, an active-duty Lieutenant Colonel, and her son. She also holds certification as an ASIST Suicide First Aid Provider. Outside of her professional and academic roles, Michelle prioritizes personal wellness and creativity. She enjoys strength training, long walks with her dog, engaging in crafts and Zen doodling as a form of relaxation, and cooking for her family.

Andrew Jenkins

Andrew Jenkins
Andrew Jenkins is an O2X Instructor from Virginia and has been a career firefighter/paramedic with Loudoun County Fire and Rescue for the last seven years. Drew is fortunate to be able to find a career that combines his passion for fitness and wellness along with having an impact on his community. When Drew isn’t on shift or assisting at the department’s health and wellness facility you can catch him outdoors or on the mats training Brazilian jiu-jitsu.

Mike Fitzpatrick

Mike Fitzpatrick
Mike Fitzpatrick is an O2X Instructor and proud United States Army Veteran, grateful for the opportunity to serve the last two decades. He completed combat deployments to Iraq and Afghanistan. His most recent role, before completion of service, was as Platoon Sergeant within a light infantry company of the Rhode Island Army National Guard. He currently serves as a Firefighter/EMT-B for a major city fire department in the Northeast, working on an Engine company and serving as an adjunct Fire Academy instructor. Mike holds a B.A from the University of Massachusetts, Boston and considers himself a lifelong learner. He is always eager to engage in discussion and the learning process. He is also a lifelong resident of the City of Boston, where he currently resides with his wife, their four children, and beloved German Shepherd.

Kevin Dautel

Kevin Dautel
Kevin is an Instructor with O2X Human Performance, where he has spent the last 6 years training tactical athletes in the military, government/federal agencies, and first responder communities. With over 12 years of coaching experience, Kevin focuses on building high-level performance that actually lasts.
A graduate of Castleton University with a B.S. in Exercise Science, Kevin holds a CSCS and has completed the OPEX CCP program, specializing in individualized program design and long-term athlete development. Kevin has been head coach of multiple CrossFit gyms and holds a CrossFit Level 2 certificate.
Throughout his career, Kevin has worked with a wide range of people—from Olympic lifters and elite gymnasts to tactical operators and those returning from injury. His approach is backed by hands-on training with the Active Life Immersion program, where he learned to better assess and create programs for athletes struggling with joint pain or mobility issues. He has also coached under Olympians David Durante and Chad Vaughn through PowerMonkey Fitness, focusing on technical proficiency in gymnastics and weightlifting.
Kevin’s goal is simple: helping people get better every day by using smart, individualized programming to help them reach their goals and move pain-free.

Christina Morris

Christina Morris
Christina Morris is an O2X Instructor. Christina is also a wellness entrepreneur and the creator of Gypsy Fit- an online wellness platform. Her Bachelors in Education has empowered her to coach thousands of athletes and clients over the course of the past 10 years.Her coaching journey began in 2011 at a Crossfit gym in Boston and has evolved into the creation of her own brand which promotes a more holistic approach to health. She equips clients with a roadmap towards sustainable wellness for their life’s journey through a variety of her nutrition and training programs.Christina is passionate about learning and evolving her coaching style as she continues to grow. Her certifications and continuing education include: Box Fit Certified, Crossfit Level 1 & 2, Crossfit Strongman, Juggernaut Powerlifting Seminar, Crossfit Mobility, Certified Physical Preparation Specialist, Precision Nutrition and currently working on becoming a Certified Transformational Nutrition Coach.As a competitive athlete, Christina has competed in the Reebok Crossfit Regional Individual and Team competitions for 4 consecutive years (2013-2016) in addition to competing in an amateur boxing match for charity hosted by Haymakers for Hope at the House of Blues in Boston in 2016.Christina wears many hats as student, trainer, coach and athlete but has also had the opportunity to work as a fitness model for some major brands like Reebok, UnderArmor and Nike to name a few.Her passion is using movement and nutrition as the catalyst for change empowering individuals to step into the best version of themselves. She is most proud about her volunteer work with The Phoenix-a nationwide nonprofit sober active community. She helped in the beginning phases of the Boston Chapter and continues to support their organization.

Mark Lane

Mark Lane
Mark Lane is an O2X Instructor who brings energy, authenticity, and real-world experience to every team he works with. As a U.S. Air Force veteran and former firefighter, Mark understands the demands of high-performance environments. He applies that perspective to help others improve performance and build a sustainable lifestyle. His journey with Type 1 Diabetes also gives him a unique, practical understanding of optimizing performance under complex conditions.
With over 20 years in competitive rugby and 15+ years in the fitness community, Mark pairs hands-on experience with professional credentials. He is both a Certified Strength and Conditioning Specialist (CSCS) and CrossFit Level 2 Trainer (CF-L2), and holds a B.S. in Strength & Conditioning from The Citadel.
Mark lives the O2X philosophy of 1% better every day and brings that approach to every client he coaches. Based in Nashville, TN he is committed to helping individuals and teams perform at their best when it matters most.

CJ Gibbs

CJ Gibbs
CJ Gibbs is an O2X Assistant Instructor. CJ first entered the fire service in 2014, when she joined her high school’s Fire Explorer program. After graduating, she continued to volunteer as she went through EMT, Paramedic School, and Fire Academy. CJ was hired by her first career department in 2009, then began working for her dream department, Denton FD, in 2012. Currently, CJ works at Denton’s rescue station and serves as an instructor for the department’s training program. CJ has a B.A.A.S with concentrations in Health Promotion, Public Administration, and Emergency Management from the University of North Texas. She has been a Crossfit Level 1 Trainer since 2016 and has used that training to help men and women prepare for careers in the fire service. CJ also serves as the Grant Coordinator for 555 Fitness, a non-profit whose goal is to help first responders create a resiliency to illness, injury, and disease. In her spare time, CJ works as an Adjunct Instructor for Tarrant County College’s Fire Program and travels the world.CJ’s passion to help others with their fitness journey stems from her past. Though always active, CJ struggled with being overweight until the age of 20, when she adopted a life of healthy eating and fitness. The accumulation of small changes over time allowed her to have a career she is passionate about, adventures she will never forget, and experiences she will forever cherish. It is her goal to help others reach their health and fitness potential, so they too, can enjoy all that life has to offer.

Scott Ziegler

Scott Ziegler
Scott Ziegler is an O2X Assistant Instructor. Scott has been a Firefighter – EMTB for over 15 years. Before becoming a firefighter he was a volunteer FF, worked on an ambulance, and in an emergency room as a tech. After this experience, he was hired into the City of Highland Park’s Fire Department in 2009. Highland Park, geographically, is a small city completely surrounded by Detroit and has an extremely high operational tempo. Scott worked there until he was hired by the City of Detroit in 2014, and is currently stationed on the west-side of the city on Truck 25, which resides with Engine 53. Scott is a certified Crossfit coach and has coached at a local gym for 6 years as well. He spends much of his free time hunting, fishing, and camping in northern Michigan, and also works for the fire-fighter non-profit, 555 Fitness, as one of their social media managers.

Samantha McChesney

Samantha McChesney
Samantha McChesney is an O2X Instructor, Firefighter/EMT, and Certified Strength and Conditioning Coach dedicated to providing top-tier injury prevention, strength, and conditioning for tactical, college, high school, and youth athletes. As the founder and owner of a fitness studio specializing in tactical and elite athletes, Samantha’s impact goes beyond individual training. She has worked to transform her department in Concord, Massachusetts, fostering a healthier workplace by introducing pre and post-shift workouts, monthly challenges, and health facts posted to a whiteboard. While also being married to a firefighter, Samantha can understand the challenges of a work/life balance within the tactical population.Her commitment extends globally, having trained athletes and first responders in various countries, stemming from her study abroad experience in Ireland. With a Bachelor’s degree in Exercise Science, a Master’s degree in Rehabilitation Science, and currently pursuing a Doctorate in Trauma Informed Care, Samantha exemplifies a passion for continuous learning.Beyond her professional achievements, she actively supports organizations like Military Friends Foundation, Tough Ruck, and 22Mohawks, raising over $100,000 for veterans and first responders. Samantha’s relentless pursuit of self-improvement is evident in her participation in 12 marathons and annual competitions such as the Arnold’s in Strongman. O2X is not just a job for her; it’s her happy place, and her dedication to personal and collective well-being is unwavering. Outside of work, you’ll find Samantha at the gym, exploring the world, playing with her dog, or discovering new ice cream places.

Jessica Silva

Jessica Silva
Jessica Silva is an O2X Assistant Instructor. Jessica has been in the first responder world for most of her career. She started out as an EMT in San Jose and San Diego. After a military relocation to Virginia, she moved to the other side of the radio as a 911 dispatcher for the City of Virginia Beach. After receiving her BS in Criminal Justice, she participated in an internship with Virginia State Probation and Parole, and subsequently worked for the City as a Community Corrections Officer for domestic violence offenders. In 2011, she started volunteering with a Wilderness Search and Rescue team and shortly thereafter started training as a K9 handler. She and Nash, the dog, worked numerous searches for missing persons, downed aircraft, and cold case human remains searches throughout the state under the Virginia Department of Emergency Management, in conjunction with both state and local police, fire departments, and rescue personnel. In addition to raising two children and riding out 14 post 9/11 deployments, she served as Ombudsman for a SEAL command for several years, was part of the shaping of resiliency programs for special forces spouses and families, and is the author of a children’s book about deployment. She currently lives in Colorado, with her husband, who has recently retired after 27 years in the SEAL teams, enjoying the empty nest life.

Zach O Neil

Zach O Neil
Zach O’Neil is an O2X Instructor who has been involved in the fire service since 2019. He started his career as a call firefighter and was later hired as a full time firefighter/EMT in 2020 for a town in the metro Boston area. Prior to going full time in the fire service, Zach worked for the City of Worcester’s Division of Emergency Management. Most recently, he assisted in the City’s response to the COVID-19 Pandemic. Zach has a B.S. in Emergency Management and is a graduate of the Massachusetts Maritime Academy. He played soccer while at the academy and served as team captain his senior year. It was during his time at Mass Maritime when he found his passion for human performance. Zach also trained for and ran the 2018 Boston Marathon which further motivated his interest in fitness and wellness. Zach hopes to share his passion and motivate others within the tactical athlete community. Zach currently lives in the Boston area where he enjoys grilling, hiking and snowboarding in his free time.

Brooke Rich

Brooke Rich
Brooke DeForte Rich is an O2X Instructor. Brooke completed her undergraduate degree in Psychology and a Masters of Education in Counseling degree at the University of Maine. While at college, Brooke competed as a Division 1 runner for the track and field team. She served as a captain for the women’s indoor and outdoor NCAA collegiate track teams. Early on Brooke developed a passion for the connection of mental and physical health and how they both contribute to overall performance. After several years working in the mental health field, Brooke went on to earn a Bachelor of Science degree in Nursing. Post graduation, she worked at The Barbara Bush Children’s Hospital caring for children and their families. Currently, Brooke is a National Board Certified Counselor, a trained health coach and works as a Registered Nurse in a school setting. She is a lifelong athlete and has competed in many adventure races, triathlons, and endurance events. Brooke lives in Southern Maine with her family and enjoys lifting weights, hiking, being on the water, running, and traveling.

Matt Stoneback

Matt Stoneback
Matt Stoneback is an O2X Instructor. Born and raised in Quakertown, PA, Matt attended East Stroudsburg University of Pennsylvania. There he obtained a bachelor’s and master’s degree in Athletic Training. While obtaining his master’s degree, he became a volunteer Firefighter. After graduating he practiced as an athletic trainer and later was hired as a professional firefighter in Frederick County Maryland where he currently works.Matt truly loves his job as a career firefighter. Having an educational background in injury prevention and rehabilitation has given him the opportunity to train with and educate others in his department on how every aspect of health and human performance impacts career longevity. After discovering O2X and their focus on tactical athletes, Matt felt he could offer a unique perspective being a firefighter with a master’s degree in athletic training. Matt emphasizes proper technique and training with a purpose, all the while pushing yourself to be the best you can be. He wants to use his background and skills to educate others on how to develop healthy habits for long and fulfilling careers. Matt believes the history of the fire department is strong but there is a need for positive change in the health and wellness part of this profession and he wants to be a part of that change.Matt enjoys fishing, hunting, traveling and taking new classes both in fire and rescue as well as health and safety. He hopes he can bring a positive impact to O2X and bring change to the fire service all across the country.

Nate Larkin

Nate Larkin
Nate Larkin is an O2X Instructor. Nate brings 16 years of career experience from Fairfax County Fire and Rescue Department. Currently at the rank of Lieutenant, Nate is assigned to T425 in Reston, VA. His passion for training is focused on the psychological and physiological stressors which the mind and body are subject to during training and on the fire ground. Previously, Nate was the Operational Training Unit Lead in the Field Training Branch where he managed, developed, and instructed numerous training classes during conferences both nationally and internationally. Nate is also a current H.O.T. Instructor at FDIC.

Christine LaVopa

Christine LaVopa
Christine LaVopa is an O2X Instructor. Christine earned her B.S. in Physical Education with an emphasis in nutrition at Queens College in New York. She went on to attain her personal training, strength and conditioning and nutrition certifications leading to over 17 years of experience in the health, wellness and fitness industry. She enjoyed playing competitive level softball in high school and also competed in fitness competitions at the national level. As a wellness coach, she creates adaptable strategies and solutions for her clients. Her clientele ranges from professional single women to busy mothers, specifically military mothers. As a military spouse and mom, she has an appreciation and a great deal of gratitude for how challenging the military life can be so when she gets to help military members and their families, it brings an extra degree of accomplishment. Living healthy and being fit is her daily routine and when she isn’t helping clients she is learning more about fitness, nutrition and wellness to further serve her clients at a higher level.Although health and wellness is her passion, the second biggest joy in her life is her family. Spending time with her husband and kids. She’s also a true beach bum and enjoys the sun and sand at every opportunity.

Joseph Tardiff

Joseph Tardiff
Joseph “JT” Tardiff is an O2X Instructor who has been involved in the fire service since 2021. Before his career as a firefighter, JT worked as a State Special Police Officer for 10 years. JT has also been involved in coaching athletes since 2014 after he competed in the New England CrossFit Regionals where his team placed 8th overall. There he found a passion for fitness and living an active lifestyle and wanted to further his knowledge by obtaining his CrossFit level 1 & 2 trainer certifications. JT has worked with athletes in the class and individual settings to pass on his knowledge of fitness and overall health. He also played baseball and rugby growing up which helped shape his team mentality which he incorporates in his classes.

Patrick Farr

Patrick Farr
Patrick Farr is an O2X instructor who became an entrepreneur over ten years ago by taking the leap from the corporate world and opening a juice & smoothie bar called Quench Juicery. Since opening location #1, the business has expanded to 4 separate locations throughout New England, two of which have subsequently been sold off, and the remaining locations have now been franchised. Patrick is also active in the CrossFit community, being a former co-owner of CrossFit Overthrow, and holds his CrossFit L2 Trainer designation. Patrick holds a B.S. in Economics/Finance from Bentley University. Being a lifelong sports and fitness enthusiast, Patrick is a 6-time marathon finisher and enjoys sharing his knowledge of nutrition (Quench Juicery) and strength and conditioning (CrossFit) with like-minded individuals. In his spare time, Patrick enjoys spending time with his wife, Emily, and doing anything physically active in an attempt to burn off the endless energy of their three young rowdy boys. He looks forward to a lifetime of physical activity and is incredibly grateful for the opportunity to teach his young boys how to one day grow up to become great men.

Alima Mims

Alima Mims
Chief Mims started in the Fire Service in 2001 as a volunteer. Quickly, he realized his passion for this work and decided to make it his career. Following his volunteer service, he was hired at Augusta Fire Department in 2007. Capitalizing on the opportunity, Mr. Mims also obtained training as an Emergency Medical Technician/Intermediate, during this time. Chief Mims became an adjunct instructor with the Georgia State Fire Academy and taught a plethora of classes across the state. Mr. Mims obtained his associate degree in Fire Science and his Bachelor of Science in Public Safety Administration and is working on finishing his Master’s degree in Homeland Security. Prior to becoming a Fire Chief, Mr. Mims was responsible for the State’s USAR and Hazardous Material Teams while working for Homeland Security. Chief Mims is also a National Incident Management System Instructor. Chief Mims is a Smoke Diver in 3 states. He enjoys mentoring young men to become productive members within society, and coaching Basketball for the youth.

Hans Olson

Hans Olson
Hans Olson is a O2X workshop instructor. He currently works with the Defense Advanced Research Projects Agency (DARPA). In this capacity, he works with the Department of Defense, Special Operations Command, and the intelligence community transitioning next generation technologies to keep the U.S. at the forefront in the global competitive environment.Hans previously worked as a Senior Vice President with Teneo Risk. In this role, he led strategic engagements and advised CEOs, management teams, and executive boards on issues relating to cyber and physical security risks and mitigation strategies, crisis preparedness, planning, management and response.He was the Cyber Engagement Manager supporting the U.S. State Department’s Global Engagement Center. Their mission is to lead, synchronize, and coordinate the U.S. Government’s interagency technology efforts to counter foreign propaganda and disinformation.Hans was also the Assistant Undersecretary for Homeland Security, and the Senior Advisor for Antiterrorism and Cybersecurity, Executive Office of Public Safety & Security, Commonwealth of Massachusetts. In this role, he oversaw multiple agencies and the Homeland Security Grant Process for the state, as well as developed comprehensive antiterrorism and cybersecurity policies.Prior to his role with the Commonwealth of Massachusetts, Hans was the CEO of SubSea Energy North America, an innovative energy company that developed micro-hydropower systems for the Department of Defense. Earlier in his career, Hans was a civilian intelligence officer with the Department of Defense and a Navy Reserve intelligence officer working primarily with the special operations community. He has multiple overseas tours, including two deployments to Afghanistan.Hans holds an MPA from the Harvard Kennedy School, an MBA from Babson College, and a MA and BA from the University of New Hampshire.

Kortney Leazer

Kortney Leazer
Kortney Leazer is an O2X instructor and Certified Strength and Conditioning Specialist (CSCS). Kortney was a collegiate athlete while studying Criminal Justice and Spanish at the University of Lynchburg and joined the Virginia State Police after graduation. While working full-time, Kortney completed her Master’s of Science in Human Performance in 2024. She is currently working with local law enforcement and fire departments to enhance their physical performance and wellness.
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Courtney Carreon
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Courtney Carreon
Courtney Carreon is a strength and conditioning coach, group fitness instructor, and graduate student in Kinesiology, specializing in human performance for tactical and adaptive populations. With over a decade of personal connection to the special operations community, she brings a deep understanding of the mindset and demands faced by military, law enforcement, and first responder professionals. Her academic focus centers on tactical performance, neuroplasticity, and injury prevention—blending evidence-based research with practical application. Passionate about turning data into actionable strategies, Courtney develops wellness solutions that help individuals perform better, recover smarter, and sustain long-term readiness. As a Certified Strength and Conditioning Specialist (CSCS), she coaches both general population clients and tactical athletes, emphasizing functional fitness and long-term development. Courtney also serves as Operations Manager for Warpaint Creations, a family-run knife and tool company founded by her husband, a former Navy SEAL. Balancing her roles as a coach, entrepreneur, and parent, she understands firsthand the demands of service life and the importance of sustainable, real-world wellness strategies. With a degree in mass communication, Courtney brings strong communication skills to her coaching—helping clients and teams understand the “why” behind the work. Outside of work, Courtney serves on the board of a local nonprofit that provides equine therapy to children with special needs. She enjoys experimenting with new training methods, traveling with her family, and staying connected to the communities she serves. For Courtney, human optimization is more than a career—it’s a personal mission rooted in service, performance, and impact.

Matt Lysy

Matt Lysy
Matthew Lysy is an O2X Instructor and firefighter with a Level 1 High Performance Medicine Coaching Academy Certification through Arena Labs. A nine year veteran of the fire service and second generation firefighter, Matthew has recognized the need to incorporate the human element into operations. It is Matthew’s belief that training and education can prepare fire service leaders for the rigorous responsibilities of critical decision making on the scenes of fires and emergencies. Matthew grew up in New Jersey spending most of his days outside with neighborhood friends. He spent seven summers as an ocean lifeguard and was a competitive swimmer throughout High School and College. Matthew is a proud Eagle Scout. Matthew holds a Bachelors of Science Degree in Psychology from King’s College in Wilkes Barre, PA. Matthew is a Firefighter/Paramedic with the Prince George’s County, MD Fire/EMS Department, an adjunct instructor with the Maryland Fire and Rescue Institute, and has recently completed his tenure as a Shop Steward for the Professional Firefighters and Paramedics Association of Prince George’s County. Matthew is an advocate for the camaraderie and bond that physical activity can instill among a group of individuals. When not working Matthew enjoys staying active and traveling to new places.

Jackson Sinnott

Jackson Sinnott
Jackson Sinnott is an O2X instructor who grew up in Duxbury, MA. He enlisted in the Army in 2014 and served seven years in the 1st Battalion, 75th Ranger Regiment. Following his active-duty service, he transitioned to the Massachusetts National Guard, where he now serves as a State Marksmanship Instructor. Jackson graduated from Harvard University in 2025 with a degree in Government and secondary fields in Russian Language and Russia, Eastern Europe, and Central Asia Studies.
Jackson’s passion for human performance began during his time at the Home Base Intensive Clinical Program and Comprehensive Brain Health and Trauma Program in Boston, MA. This experience introduced him to holistic health and wellness, shaping his belief that raw physical performance is only a fraction of what it takes to achieve lasting health and longevity.
Outside of academics and his military career, Jackson enjoys reading, golfing, and competing in USPSA shooting events. With a commitment to pushing his limits, he hopes to complete an ultra-marathon endurance event in 2026.

Alli Houseworth

Alli Houseworth
Alli Houseworth is a trauma-informed yoga therapist, educator, and human performance specialist with over 15 years of experience in communications, program development, and facilitation. A Certified Yoga Therapist (C-IAYT) and iRest Level 2 Instructor, she works at the intersection of mental, physical, and emotional resilience, supporting high-performance populations including military, veteran, and first responder communities.
She has worked with organizations including the Army Recovery Care Program, Warriors at Ease, and Warrior Canine Connection, delivering programming that translates practices such as breathwork, mindfulness, mobility, and recovery into practical, accessible tools.
Her background in marketing and audience engagement strengthens her ability to connect with diverse groups and communicate complex ideas with clarity and impact. She holds a certificate in Business Administration from Georgetown University and a master’s degree from Columbia University, where she served on the faculty for four years. A former military spouse, Alli brings lived experience, credibility, and compassion to her work, creating spaces that emphasize both accountability and care.
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Anna Huddleston
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Anna Huddleston
Anna Huddleston lives in Virginia Beach, VA, where she has proudly served the community through her private practice and as a Military Family Life Counselor in the Hampton Roads area. In her career, she has had the privilege of sharing her passion for mental health and wellness in both large and small settings, developing and delivering presentations on mental health wellness checks, self-advocacy in seeking support, and normalizing counseling as an essential tool for well-being. As a military family counselor, Anna facilitated workshops on resilience, work-life balance, stress management, effective communication, and solution-focused strategies tailored to military life. One of her most rewarding experiences was leading a wellness and self-advocacy workshop for high school athletes, witnessing young adults embrace the importance of mental health and the value of seeking help. An active-duty Navy spouse and mother of three passionate young women, Anna has cultivated a versatile résumé across diverse roles in seven states over the past 24 years. Balancing her passion and priority for family with a strong professional presence, she earned a master’s degree in professional counseling. As a Licensed Professional Counselor, she has found her calling in empowering clients to find their strengths and supporting fellow counselors to excel in their roles. She is committed to contributing to organizations that value proactive health, mental well-being, and practical skill development, while also advancing her passion for collaborating with professionals, broadening her expertise, and driving meaningful impact within communities.
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Jen Farmer
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Jen Farmer
Jen is an O2X Instructor whose commitment to Health & Wellness was shaped by her son’s brain tumor diagnosis, a defining moment that fueled her passion for resilience and service. She has spent years supporting Veterans and First Responders, helping them cut through the noise and take ownership of simple, effective habits that support their well‑being.
She currently serves as the Health & Wellness Coordinator for her local Township's Fire and Police Departments and is actively involved in her local First Responder Peer Support network, offering connection, guidance, and practical support for the challenges they face both on duty and off. Jen also helps coordinate and lead Equine First Responder Training at a local barn, integrating experiential learning with stress regulation and communication skills.
A lifelong student, Jen thrives on learning something new every day. Her mission is to empower First Responders and their families to become the strongest, healthiest versions of themselves by focusing on what truly moves the needle; foundational habits, honest self‑reflection, and steady 1% progress that compounds into lasting change.

Nika Robertson

Nika Robertson
Nika Robertson is an O2X Instructor who earned her BS in Kinesiology from the University of Nevada, Reno in 2017 and her Doctorate of Physical Therapy from Arcadia University in 2022. A lifelong athlete, she developed an early passion for optimizing performance and rehabilitating athletes across all levels. She is currently pursuing her Certified Strength and Conditioning Specialist (CSCS) credential and will begin board certification as a Sports Clinical Specialist. Nika has worked with endurance, team sport, and strength athletes, as well as tactical populations, including veterans, law enforcement, and firefighters. Nika specializes in performance-focused rehabilitation, helping individuals return to duty, sport, and training stronger, more resilient, and better prepared for the demands of their profession. Outside of her professional work, she enjoys spending time with her three dogs, reading, crocheting, lifting, running, and exploring the Sierra Nevadas through hiking and camping.

Mark Swinger

Mark Swinger
Mark is an O2X Leadership Specialist. Mark served 22 years as a Navy fighter pilot flying F-14 and F/A-18 aircraft, accumulating over 3200 hours and 830 aircraft carrier arrested landings. A former Blue Angel pilot, he flew the Left Wing and Slot positions as “Blue Angel No. 3 and 4” in 2008 and 2009. He served as the Squadron Commanding Officer of the VFA-192 Golden Dragons, and concluded his career as the Naval Aviation Legislative Affairs Portfolio Manager. Mark is currently an airline pilot for United Airlines. He holds a degree in Political Science from the University of Delaware, and a Master of Business Administration from Washington State University.

Brian Kitching

Brian Kitching
Brian Kitching is a former Army Ranger and Lieutenant Colonel with over 20 years of experience commanding high-risk missions in Special Operations and other combat units.In 10+ overseas deployments and 50+ months of combat, Kitching led hundreds of high-risk operations and was recognized on three separate occasions for bravery in battle. Kitching is a recipient of the nation’s third highest military decorations for gallantry, the Silver Star, as well as six Bronze Stars, two awarded for valor.Kitching served as a Downin Scholar at the Combating Terrorism Center at West Point and as a military fellow at the International Centre for the Study of Radicalisation at King’s College in London. His recent assignments include serving as a White House Fellow and Advisor in the Domestic Policy Council and Office of Management and Budget, and as an advisor to the Chief of Staff of the Army, the Army’s senior-most General, at the Pentagon. His final assignment was at the 101st Airborne Division, where he was the first African American to command the storied 2nd Battalion, 327th Infantry Regiment (“No Slack”), and he also served as the Director of Operations for the Division.Kitching earned a Bachelor of Science in Economics from Alabama A&M University, a Master of Public Administration from Harvard Kennedy School of Government, and a Masters of Arts in International Affairs from the Fletcher School of Law and Diplomacy at Tufts University. Kitching is a lifetime member of the Council of Foreign Relations.
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Warren Wright
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Warren Wright
Warren is a retired Coast Guard aviator and mission support specialist with over 20 years of experience planning and executing high-risk missions in the aviation, afloat and special missions communities. On three diverse continents and in four different aircraft, Warren flew over 1800 flight hours, conducting hundreds of operations in support of all 11-statutory Coast Guard missions. He has been recognized with various service and community awards, including the Meritorious Service Medal, Coast Guard Commendation Medal, and the Humanitarian Service Medal. He served as a Congressional Fellow, assigned to the office of Senator Lisa Murkowski (R-AK); the Chief of External Affairs for the 14th CG District and the principal liaison for Indo-PACOM Theater Security Cooperation; and the Deputy Chief of Incident Management and the Aviation Program Manager for most of the Coast Guard's west coast operations. Warren’s last operational assignment was as the Logistics Department Head and Commanding Officer of Military Personnel, at Sector Los Angeles – Long Beach, where he provided mission support for all operations in southern California and parts of Central America. Warren is a native of the Bronx, NY. He has a Bachelor of Science Degree from the U.S. Merchant Marine Academy, a Command and Staff Diploma from the Naval War College, and a Juris Doctor from the University of Hawaii, Richardson School of Law. He is a contributor to the Indo-Pacific Defense Forum, and a Life Member of the National Naval Officers Association. Warren also serves as the Head Lacrosse Coach at Wilson High School, in Long Beach, CA.

Brian Reed

Brian Reed
Brian Reed retired from the U.S. Army in 2023 as a Brigadier General after more than 34 years of active-duty service. He was commissioned as an Infantry Officer from the United States Military Academy in 1989. His leadership experience includes commanding the 1st Battalion, 24th Infantry (Stryker), and the 1st Stryker Brigade Combat Team, 25th Infantry Division. He is a veteran of numerous combat and operational deployments, including tours for Operation Iraqi Freedom, Operation Enduring Freedom, and Operation Uphold Democracy. Complementing his operational background, Brian holds a Ph.D. in Sociology from the University of Maryland. He also served in key roles at West Point, including as the Brigade Tactical Officer, Deputy Head of the Department of Behavioral Sciences and Leadership, and the USMA Chief of Staff. In his final assignment, he served as a Senior Advisor to the Secretary of Defense. Brian now channels his dedication to service as a passionate advocate for active-duty, first responder, and veteran mental health. He puts this advocacy into action through challenging physical endeavors, from a Denali expedition to climbs and hikes in the White Mountains and upstate New York. To raise funds, generate awareness, and honor the fallen, he has completed marathons and half-marathons and is an annual participant in tribute events like the Manion WOD, The Murph Challenge, the Extortion 17 Memorial Run/Ruck, and the CHAD1000X.

Sara Hendershot

Sara Hendershot
Sara Hendershot is an O2X Thrive Specialist. Sara is a lifelong athlete and competitor. She grew up in Boston, MA where she developed a love of sports from an early age. During her high school years, she moved to Simsbury, CT where she was introduced to the sport of rowing. Immediately drawn to the nature of the sport, she realized that this highly technical craft rewarded relentless hard work, and she committed herself to the goal of competing in college.This lead Sara to be recruited to row at Princeton University where she became her team’s Captain, a two-time All American, and graduated with a B.A. in Psychology. Upon graduation, she earned her way onto the United States Women’s National team and became a two-time World Champion and 2012 Olympian in the Women’s Pair where she finished in fourth place. Through this journey, she faced several bouts of injury, which lead her to study human movement and physiology and develop a passion for coaching and high performance.After retiring from the sport of rowing, Sara has taken the lessons she learned from professional sport and applied them to performing in business and life. She has developed a career in brand marketing for health and fitness companies, where most recently she helped build a sports nutrition brand from before its launch to its fourth consecutive year of growth. She is also a performance consultant to the Harvard Women’s Rowing Team, an avid mental health advocate, and she continues to compete in athletic events like the NYC and Chicago marathon. Sara now lives in Cambridge, MA with her husband Mike, son Maverick, and French Bulldog Bron.

Myron Burns

Myron Burns
Myron J. Burns, PhD is an O2X Resilience Specialist. Dr. Burns completed his undergraduate studies from Howard University in Washington, DC and graduate training in Counseling Psychology from Tennessee State University in Nashville, TN. In addition, he has completed post-doctoral training in health psychology from the University of Miami. Dr. Burns is currently an Associate Professor in the Department of Psychology and Neuroscience at Novasoutheastern University College of Psychology.He has instructed a variety of courses in psychology, counseling, and substance abuse. Dr. Bruns has worked with individuals, families, first responders, and military personnel on processing trauma and stress, depression, drug use, and stress management. His research interests are in health, personality, resiliency, and stress process variables. Dr. Bruns is a native Floridian, and when not working, this self described “military brat” can be found in the gym or traveling abroad.

Lauren Simmonds

Lauren Simmonds
Lauren Simmonds is an O2X Resilience Specialist. Lauren Simmonds has been a licensed clinical psychologist since 2015. Lauren went to the University of Central Florida for her Bachelor’s degree in Psychology, and continued her education at Nova Southeastern University where she obtained both her Master’s and Doctorate degree in Clinical Psychology.Lauren completed an internship at the Southern Arizona VA in Tucson, AZ and residency at the James A. Haley VA in Tampa, FL. Lauren continued her work with the military/Veteran population at Womack Army Medical Center in Fort Bragg, NC, working primarily with the 82nd Airborne Division.In 2019, Lauren went through support assessment and selection for AFSOC-GSU and began her career with Special Operations. Presently, Lauren is working at the Joint Special Operations Command at Fort Bragg, NC. Lauren has extensive experience with trauma focused interventions for the treatment of PTSD (combat and MST), as well as the treatment of TBI, depression, anxiety, and sleep disturbance.

Elizabeth Werly

Elizabeth Werly
Dr. Elizabeth Werly is an O2X Mental Performance and Resilience Specialist. She has a foundation in clinical psychology and works as an operational aviation psychologist for the United States Army. Dr. Werly has provided individual and organizational consultation for military personnel in both training and deployed environments.Her training focuses on performance enhancement in high stress, fast-paced environments with extreme performance expectations. Her work focuses on education, self-awareness, and advanced resilience training for individuals and teams in order to build and foster a culture of well-being for continued advancement and peak performance. Dr. Werly has been working with the military since 2015 and has deployed twice in support of combat operations.Her areas of expertise include: performance enhancement, advanced behavioral consultation, resilience and mental performance, personnel selection, executive coaching, leader coaching and development, training and program support, performance psychology, generational trends, and program evaluation.Dr. Werly currently lives in Nashville with her Husband Dan and their son, Jack.

Shumi Rawlins

Shumi Rawlins
Dr. Shumi Rawlins is an O2X Resilience Specialist and licensed clinical psychologist with extensive experience supporting individuals in high-risk environments. Commissioned into the U.S. Navy in 2005 and later serving in the Navy Reserves, she spent over 15 years combining her clinical expertise with her background as a military spouse to support active-duty service members and their families. As an embedded psychologist at a Special Operations command, she specialized in addressing the mental outcomes of high-risk operations and teaching human performance and resilience strategies as well as provided clinical interventions. Additionally, Dr. Rawlins spent six years integrating assessment, selection, threat assessment, and management to enable DOW organizations to optimize personnel performance and implement adverse-outcome mitigation strategies. Drawing on her deep understanding of the unique personalities drawn to high-risk professions, she provides essential techniques for leadership success and sustained performance.

Kally Swibes

Kally Swibes
Kally Swibes is an O2X Resilience & Mental Performance Specialist. She currently works for Versado Training – a company out of Raleigh Durham, specializing in adult learning within the life science industry. Prior to Versado, Kally worked in the advertising industry in Chicago and helped start a program called Athletes Connected, a collaboration between the University of Michigan and the NCAA. Her work with Athletes Connected allowed Kally to speak to Student Athletes at the University of Michigan and around the Big Ten about her struggles around mental health. The goal of these workshops was to normalize the topic of mental health and to promote help seeking in student athletes – a group who generally does not reach out for help when struggling with mental health issues.Kally now speaks with student athletes and organizations around the country using her story to demonstrate the power of human performance and how it contributes to the success of every individual.

Andy Haffele

Andy Haffele
Andy Haffele is an O2X Resilience Specialist and former U.S. Navy SEAL. He grew up in small-town southern Wisconsin enjoying the outdoors and playing football before attending the United States Naval Academy, where he studied Computer Science, competed in intercollegiate boxing, and graduated in 2001. He went on to complete SEAL training in San Diego and reported to SEAL Delivery Vehicle Team ONE in Pearl Harbor, Hawaii.
Only four months into training with his first SEAL platoon, Andy was critically wounded during a live-fire training accident on March 18, 2004, sustaining a close-range gunshot wound to the chest that caused severe and permanent nerve damage to his right arm and shoulder. Just six weeks later, he was diagnosed with testicular cancer and required additional surgery and radiation treatments before achieving remission.
A little over a year after Andy’s accident, his former platoon deployed to Afghanistan and was involved in Operation Red Wings, where 19 American servicemen were killed in action, including five of his platoon-mates. The events of that mission were later chronicled in the book and film Lone Survivor.
After years of physical recovery and therapy, Andy was medically retired from the Navy. He later transitioned into the Information Technology field and now works for a law enforcement agency in the Rocky Mountain region, supporting technology, leadership, and peer support programs.
Andy believes he has been given a second chance at life. A husband and father of three boys, he speaks openly about resilience, faith, and overcoming adversity while helping military members, first responders, and others navigate life’s most difficult moments.

Jennifer Pugh

Jennifer Pugh
Jennifer Pugh is an O2X Resilience Specialist with expertise in mental health skills training. Her areas of focus include acute and chronic stress management, emotion regulation, anger management, effective communication, crisis intervention, mindfulness, and cognitive restructuring. Jennifer served for many years as a staff clinician at her local VA hospital, engaging servicemembers, veterans, first responders and government employees in a variety of mental health treatment modalities. She now owns her own practice and teaches graduate clinical courses at Boston College. Jennifer received her B.A. in Psychology from Boston University and her MSW with a focus in veterans and military families from Boston College. After graduation, she went on to complete an academic fellowship at the Boston Psychoanalytic Society and Institute. She is currently licensed to practice clinical social work in Massachusetts and New York, and is certified in Interpersonal Psychotherapy, Acceptance and Commitment Therapy, and Integrative Behavioral Couple Therapy. Her professional experience includes the provision of individual psychotherapy, group therapy, clinical case management, and psychoeducation training in both inpatient and outpatient mental health settings. With personal ties to law enforcement and the military, Jennifer appreciates that the optimization of mental wellness is an integral part of maximizing human performance. Following the same advice she gives her clients, her free time consists of eating fun foods, getting outdoors, catching quality zzz’s, and working up a good sweat.

Arno Ilgner

Arno Ilgner
Arno Ilgner is an O2X Resilience Specialist with expertise in stress management, resiliency, and all things mental training for tactical athletes & first responders nationwide. Arno distinguished himself as a pioneering rock climber in the 1970s and ‘80s, when the top climbs were bold and dangerous first ascents. These personal exploits are the foundation for his unique physical and mental training program–The Warrior’s Way ®. In 1995, after a thorough search of the literature and practice of mental training and the great warrior traditions, Arno formalized his methods, founded the Desiderata Institute, and began teaching his program full time. Since then, he has helped thousands of students sharpen their awareness, focus attention, and understand their athletic (and life) challenges within a coherent, learning-based philosophy of intelligent risk-taking. Arno considers the joy and satisfaction in the effort – the “journey” – intimately linked to successful attainment of goals, the “destination.”Arno has taught clinics across the U.S.A. and abroad. He holds a BA in geology, spent several years operating his own geological consulting firm in the Wyoming oil fields, acted as Chief Financial Officer for an industrial tool distribution company, attended the Army Ranger School, and served a non-combat tour of duty in Korea. He currently resides with his family near Nashville, Tennessee.

Dan Cnossen

Dan Cnossen
Dan Cnossen is an O2X Resilience Specialist. Dan was raised on a 5th-generation family farm in Topeka, Kansas. After successfully completing SEAL qualification training in 2003, he deployed numerous times in support of global special operations. As a SEAL platoon commander, he was severely injured in 2009 in Afghanistan, resulting in the amputation of both legs above the knees. Turning to sport for recovery, Dan eventually began training full-time for the US Paralympic Nordic ski team. He has since competed for Team USA in the 2014, 2018 and 2022 Paralympic Winter Games and is the first male athlete to win a gold medal for the United States in biathlon, a sport that combines cross-country skiing with precision target shooting. Dan holds a BS in English from the U.S. Naval Academy, MPA from Harvard Kennedy School, and MTS from Harvard Divinity School. He has been working with O2X since 2018 as a resilience specialist.

Coleman Ruiz

Coleman Ruiz
Coleman Ruiz is an O2X Leadership and Resilience specialist. Coleman is also the Co-Founder and Director of Performance at the Mission Critical Team Institute. The MCTI develops research and practice for the Selection, Training, and Professional Development of Mission Critical Teams, defined as small (4-12 agents) integrated groups of organically trained and educated experts dealing with complex adaptive problems. Mission Critical Teams operate in immersive, but constrained (300 seconds or less), temporally constrained environments where the consequence of failure can be catastrophic. Mission Critical Teams, as examples, include Wildland and Urban Firefighters, Trauma Surgeons, Hostage Rescue teams, elite sports teams, Special Operations soldiers, etc.Coleman is also an Advisor and Partner at the Liminal Collective, reimagining the future of what is possible as a Human 2.0, Humans 2.0, and Humanity 2.0. The Collective helps create, plan, organize, and execute against some of humanity’s boldest endeavors ranging from space flight and deep-sea exploration to reimagining the future of national security and elite sport. The Liminal Collective serves as the operational planning arm for “never been done” events, and serves the individuals training for performance under pressure in high consequence environments.Coleman is a U.S. Naval Academy graduate and former Naval Special Warfare (SEAL) Officer. All-together, he served six operational combat deployments in both Afghanistan and Iraq. He’s served as troop commander, joint task force commander, and executive officer at various levels of Naval Special Warfare and served in U.S. Embassies in both Yemen and Kenya working directly with the Ambassador’s country team. Coleman also served as a Training Officer at both the basic and advanced Naval Special Warfare (SEAL) training schools.Coleman has served as a trainer, educator, and advisor for over a dozen collegiate teams, and professional athletic organizations. He serves as a US Naval Academy Trustee for Athletic and Scholarship Programs and serves as a Senior Fellow at the US Naval Academy’s VADM James B. Stockdale Center for Ethical Leadership.Since completing active duty service in 2011, Coleman has also served as the Executive Director of Carry the Load in Dallas, TX, a 501(c)3, as a board member at Tip of the Spear, a veteran-focused non-profit, and member of the Station Foundation’s veteran transition programs. Lastly, he often serves as a Mentor at COMMIT Foundation transition workshops, where senior retirees or high-potential veterans are creating their path into the private sector.Coleman graduated from the U.S. Naval Academy with a B.S. in Mathematics and earned an MBA in Finance at the Government School of Business & Public Policy from the Naval Postgraduate School in Monterey, CA.He lives in Annapolis, MD with his wife Bridget Ruiz and their three children, Coleman (age 16), Ben (age 14), and Oliver (age 10).

Geoff Krill

Geoff Krill
Geoff Krill is an O2X Resilience Specialist. Geoff is also an adventure athlete, professional skier and public speaker, who first found skiing when he was 12 years old when his family moved from Georgia to Connecticut. He continued to ski recreationally through college until suffering a spinal cord injury in a snowmobile accident in New Hampshire in 1995. As soon as he received the “ok” from his doctor, he learned to ski sitting down. Geoff went from student to instructor that first season with New England Disabled Sports at Loon Mountain in New Hampshire. He now serves as the Executive Director of Eastern Adaptive Sports. Geoff is a member of the Professional Ski Instructors of America (PSIA) National Demonstration team, which allows him to travel across the country to share his work at other mountains. He is also a PSIA examiner in the Eastern Division and spends much of his time leading clinicians and training others in the sport he loves. Some of Geoff’s important wheelchair “firsts” include being the first mono skier to tackle Tuckerman’s Ravine on Mt. Washington and the first hand-cyclist to travel the three notches (Franconia, Crawford and Bear notches) and 100 miles in one day. He currently lives in North Woodstock, NH with his wife, Heather and two children, Carver and Greta. As his wife puts it, you can always find him out trying to save the world one wheelchair at a time.
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Ian Manning

Ian Manning
Ian Manning is an O2X specialist who graduated from Northeastern University in 2003 with his Bachelors in Allied Health Sciences and in 2004 with his Masters in Physical Therapy. He specializes in Orthopedic injuries and in Injury prevention for all demographics and occupations. In 2008, he continued on his education path with the Titleist Performance Institute and now specializes in helping golfers improve their performance and also prevent injuries. Ian is a dry needling specialist and has been utilizing the technique since 2010. He now helps educate other health care practitioners on incorporating the treatment into their therapeutic interventions.Ian opened his own private practice in 2012 and grew the business over the next 10 years. In 2022, he merged with Performance Physical Therapy and now continues to focus on business development and implementing their growth strategy. When he isn’t treating in the clinical setting he travels to treat professional athletes and provide concierge medicine.

Jessica Visintainer

Jessica Visintainer
Dr. Jessica Visintainer is an O2X Injury Prevention Specialist and Doctor of Physical Therapy specializing in injury prevention, human performance, and return-to-duty optimization for tactical and high-performing populations. She earned her Doctorate of Physical Therapy and Bachelor of Science in Kinesiology from Temple University, where she developed a strong foundation in biomechanics, sports science, and evidence-based rehabilitation.
With a background in orthopedic and sports physical therapy, Dr. Visintainer focuses on identifying movement inefficiencies, reducing injury risk, and building long-term durability. She holds advanced certifications in the Mulligan Concept, dry needling, vestibular rehabilitation, BFR training, and run gait analysis, and has been published for developing home-based vestibular rehabilitation programs to expand access to care.
Dr. Visintainer is the founder of V3 Physical Therapy, an elite sports performance practice working with high school, collegiate, and professional athletes. She specializes in working with field, court, endurance, and tactical athletes—individuals for whom performance is not optional. Her approach integrates advanced manual therapy, movement analysis, and sport-specific training to address not just where an athlete hurts, but why—and what it takes to return stronger, more resilient, and better prepared for the demands of their role.
Her current work includes the development and implementation of neurocognitive performance programming focused on improving dual-tasking capacity in both athletes and aging populations. This includes identifying subtle deficits that may not be captured in standard concussion screening, with the goal of optimizing return-to-play readiness, reducing residual cognitive deficits, and enhancing decision-making and performance under load.
In addition to her clinical work, Dr. Visintainer serves as a public speaker delivering education on injury prevention, resilience, and performance optimization. Her teaching emphasizes practical application, helping individuals and teams translate evidence-based principles into actionable strategies in the field.
When she is not supporting her athletes, Dr. Visintainer is an endurance multisport athlete with a background in Krav Maga and Brazilian Jiu Jitsu, providing firsthand insight into the physical and mental demands of high-performance environments.

Tiffany Sheffield

Tiffany Sheffield
Tiffany Sheffield is an O2X injury prevention specialist. Tiffany graduated from Bellarmine University in Louisville, KY., with her Doctor of Physical Therapy degree in 2019. She holds a Masters in Healthcare Administration and a Bachelor’s in Exercise Sports Science. She has worked with various populations to include but not limited to veterans, active duty, firefighters, horse trainers, equestrians, paramedics and pro-athletes. Her primary focus has been in the outpatient setting where she has effectively treated conditions including orthopedic injuries, neurological disorders, vestibular dysfunction, post-concussion syndrome, post/pre-operative, and pelvic floor dysfunction. Tiffany provides a holistic and comprehensive approach to achieve maximum recovery and performance to minimize long term pain and impairments. She believes in treating the patient as a whole and is passionate about providing an individualized plan of care. The military is near and dear to her heart. Her father served in the United States Army, her brother served in the United States Marine Corps, and her husband served in the United States Navy.

Alexa Bannerman

Alexa Bannerman
Alexa Bannerman is an injury prevention specialist with O2X with 14 years of progressive sports medicine experience as a Certified Athletic Trainer (ATC). She received her Bachelor’s of Science in Athletic Training from the University of Central Florida, and a Master’s in Science in Sport Fitness Management from Troy University. Alexa is currently working as a contracted ATC with Naval Special Warfare in Virginia Beach, Virginia. Prior to transitioning to the tactical athlete, Alexa spent most her career in Division I athletics. Alexa possesses a strong clinical skills, with specialty in myofascial therapies, Functional Dry Needling, post-operative rehab, and innovative return to duty rehabilitation. Born and raised in Michigan, Alexa is a Midwest girl at heart. She is an intrinsically motivated lifelong learner who loves working with like-minded individuals. In her free time, Alexa enjoys weight lifting, eating, outdoor activities, and spending time with her husband and their three crazy kids!

Joe Cavallaro

Joe Cavallaro
Joe is Doctor of Physical Therapy who owns a private practice, Full Spectrum Physical Therapy & Performance, based in southern New Hampshire and currently provides guidance in injury prevention and management with the Health & Ladders program at the Boston Fire Department.
Prior to working with the Boston Fire Department Joe worked with O2X as an Integrated Human Performance Specialist with the Massachusetts National Guard. In this role he helped to coordinate injury prevention and management between individual Soldiers and leadership at multiple organizational levels to facilitate readiness, reduce risk in training and promote positive training opportunities for Soldiers managing new or chronic injuries.
He is a 2013 graduate of Northeastern University’s Doctor of Physical Therapy program, is a Certified Strength and Conditioning Specialist and USA Triathlon coach. Some of his experience include work with the Boston Celtics and Indiana Pacers, the Premier Lacrosse League and professional triathletes based out of New England. After his time with the NBA Joe moved to the private practice world where he continued to work with high school, collegiate and professional athletes and first responders developing multidisciplinary relationships across the medical and performance worlds to help athletes and first responders succeed with return to sport or duty.
Outside of the clinical world Joe is an adjunct faculty member at Merrimack College and Nashua Community College where he teaches courses in Anatomy and Physiology and Therapeutic Exercise to future health care leaders. Joe lives in Hollis, NH with his wife Katherine and their two boys. He is a triathlete and avid outdoor enthusiast, active in several running and triathlon clubs, and can be found year-round in the White Mountains of New Hampshire hiking, ski touring or climbing rock and ice.

Vickie Dills

Vickie Dills
Vickie Dills is an O2X Injury Prevention Specialist. She received a Bachelor of Science degree in Physical Therapy from Northeastern University in 1999 and later completed her Doctorate in Physical Therapy at Simmons College. Vickie embraces the concept of evidence-based rehabilitation. In treating physical therapy patients, she draws upon current research to incorporate scientifically validated methods into her daily practice. In March 2016, she co-authored an article titled “Return to Play Following Sports Hernia Surgery”, which was published in “Clinics in Sports Medicine”.Vickie is also a licensed private pilot and a certified SCUBA diver. Prior to pursuing a career in Physical Therapy, she worked in a trauma center operating room under the direction of the anesthesia department. Vickie served as an active duty Hospital Corpsman in the U.S. Navy. She holds numerous certifications, including Orthopedic Clinical Specialist (OCS), Certified HawkGrips Blood Flow Restriction (BFR) Specialist, Certified ImPACT Trained Physical Therapist (ITPT), Certified Strength and Agility Coach (CSAC), Dry Needling for Orthopedic Rehabilitation and Sport Performance, and Training for Warriors Instructor Certified, among others.

Maria Urso

Maria Urso
Dr. Maria Urso is an O2X Nutrition Specialist. Dr. Urso is a scientific advocate for optimal health and nutrition. She followed her passion for science and health and obtained her PhD in human physiology from the University of Massachusetts, Amherst. While that degree led her to a career as a scientist, first as an Active Duty soldier in the Army, then in Medical Affairs for industry, she continues to follow her passion for health and nutrition by serving as an advocate and educator. Her philosophy is that nutrition and fitness should be for life, not a single event (or outfit). To do this, we need to follow scientifically-sound and sustainable practices, not the latest story or fad from the media. Maria uses her education in biochemistry, physiology, and nutrition, as well as personal experiences with competitive running, to develop nutrition and exercise plans that make sense and allow her ‘students’ to eat and train for life. She understands that this is an ever-changing field, and staying on top of the latest research is critical. She has published over 30 papers in scientific journals and several book chapters, but she is most comfortable when using her scientific background to write or speak about nutrition and fitness practices. In her free time, Maria loves to run, swim, hike, adventure travel, and read.

Erik Bustillo

Erik Bustillo
Erik Bustillo is an O2X Nutrition Specialist, Registered Dietitian, and former Vice President, ambassador, and fellow of the International Society of Sports Nutrition (ISSN). Erik is also a Certified Sports Nutritionist through the ISSN, a Certified Strength Coach through the National Council on Strength & Fitness (NCSF), and a Certified Personal Trainer through the National Strength and Conditioning Association (NSCA).
He specializes in reading and understanding blood/lab values that have a direct effect on human physiology and one’s ability to perform. Several fields of expertise include energy improvement, performance recovery, weight loss, working with professional/elite athletes, stress management, inspirational communication, mindset, and habit change. Erik has been in the field for over 15 years and knows that nutrition is an elemental factor in well-being & performance; he has been and is currently involved in conducting research studies. He has worked with tactical athletes throughout his entire career and never plans to stop.
His mission is to make this world a better place, and he strives to accomplish this by helping others achieve their health and life goals. He believes that with hard work and determination, everyone is capable of accomplishing what they set their mind to. He enjoys training on a regular basis, as he feels what we do in fitness (the weight room, gym, field, etc.) translates to the real world. Erik practices this by playing sports, getting outdoors, high-intensity training, weightlifting, CrossFit™, and improving his aerobic fitness by running and chasing his dog. He is passionate about making his patients and clients push themselves harder and further than they ever imagined, using a practical approach that turns exercise and nutritional science into easy-to-follow steps for action. Follow him @erikbustillo

Patrick McCarthy

Patrick McCarthy
Patrick McCarthy is an O2X Nutrition specialist who specializes in performance nutrition and has a background in both sport and exercise science and nutrition. Alongside this, Patrick has 10+ years’ of experience as a basketball coach and 5 years as a semi-professional player in Ireland. His coaching experience has provided him with the ability to communicate effectively to athletes of all types. On the other hand, his athletic career provided first-hand experience of the importance of nutrition, training, recovery and all the other 1% details required for optimal performance. In 2018, he was appointed as the senior nutritionist for a top level football club and has been working with high-performance athletes ever since.Patrick has a passion for bridging the worlds of science and coaching by breaking down evidence-based science to practical and actionable information. He believes that now more than ever, we are what we eat. He strives to help improve peoples’ understanding of what their body requires on a daily basis not only to function, but to excel in training and performance. From this, one’s confidence improves in situations where physical fitness, endurance, strength and recovery are critical. Patrick currently hosts a nutrition-related podcast called The Ubuntu Nutrition Podcast, where he strives to complete the goals mentioned above. The term ‘Ubuntu’ is an ancient Zulu phrase that is loosely translated to ‘I am because we are’. It places an emphasis on a family, team approach to everything. At O2X, Patrick can see that togetherness and teamwork are core values, which is why he is so excited to be a part of this brilliant program!

Tiffany Batsakis

Tiffany Batsakis
Tiffany Batsakis is an O2X Nutrition Specialist and Registered Dietitian. She earned her Master’s Degree from the University of the Incarnate Word in San Antonio, Texas, and completed her dietetic internship there as well. She served in the United States Army for six years. As a result, she is familiar with the needs of the tactical athlete and maintains a high level of physical fitness in her day to day life. Upon completion of her degree, Tiffany worked for the non-profit organization, Meals on Wheels of San Antonio, where she planned the menu and conducted nutrition analysis for the meals served to over 3,800 homebound seniors daily. While at the organization, she counseled clients, worked with kitchen staff and food vendors, maintained the site’s blog, conducted surveys, and mentored student interns. In 2016, Tiffany left her job to travel, mostly in Asia, for two years. When she returned, she started her own business as a consultant and contract dietitian, with a focus on healthy living, nutritious meal plans for clients, menu planning and nutritionanalysis for various organizations, and general nutrition education classes tailored to the client. Tiffany has worked in a variety of settings, including one of the largest grocers in Texas, HEB. As a retail dietitian, she counseled clients and helped shoppers find quality food products, meal ideas, and nutritious recipes. She has also taught Cooking and Nutrition in Recovery (from substance use disorders) at addiction treatment centers, including one facility that caters specifically to active military, veterans, and firefighters in recovery.As a registered dietitian, Tiffany has a passion for health and wellness and is also a personal trainer. She remains active in her daily life, conducts weekly workouts with members of the fire department, and enjoys the outdoors. She earned a certificate in Topics in Human Behavior at Harvard Extension School and feels behavior change is a very helpful way to improve nutrition outcomes. She is a member of the Academy for Nutrition and Dietetics (AND), and belongs to different dietetic practice groups including, CV Wellness, and the Behavioral Health Nutrition Group through the AND. She has also attended various sports and nutrition symposiums and stays up to date with the latest and greatest in the world of nutrition via webinars, conferences, and training events.

Samantha Poccia

Samantha Poccia
Samantha is an O2X Nutrition Specialist. Prior to her time at O2X, Samantha worked in market research for several years. During that time, she collaborated and built relationships with Fortune 500 companies to connect them to their consumers through private on-line communities. She also had the opportunity to work on global accounts in Australia and New Zealand, traveling there to meet with the clients.Samantha received her Bachelor of Science in Communications with a minor in Entrepreneurship from Syracuse University in 2013. While there, she competed on the Club Women’s Ice Hockey team and was the co-captain her senior year. She decided to change career paths and went back to school in 2017 to become a Registered Dietitian. She received her Master of Nutrition from Simmons University, as well as a Certificate in Sports Nutrition and a Certificate in Integrative Functional Nutrition. While completing her M.S., Samantha researched and co-authored an article investigating the behaviors, attitudes, and beliefs of pregnant women as it relates to their nutrition and supplementation. Her research has been published in Nutrition and Health Journal.Samantha enjoys running and has completed three marathons and two half-marathons, with her eyes set on more in the future. For the past 8 years she’s been a Lagree and spin fitness instructor in Boston, teaching at SLT and Equinox, respectively. In her free time, Samantha enjoys being with friends and family, including her new nephew, watching movies and shows, reading new books, spending as much time outside as she can, and traveling to new places.

Chloe Schweinshaut

Chloe Schweinshaut
Chloe Schweinshaut is an O2X Nutrition Specialist and registered dietitian who owns a private practice, Riverside Nutrition, in Cambridge, MA. She works with a variety of clients looking to improve their health through diet and lifestyle, with a particular focus on first responder nutrition.
Drawing on both professional experience and personal connection, Chloe specializes in supporting the unique demands of first responders, helping them optimize performance, resilience, and long-term health in high-stress environments. She has worked with departments including the Boston Fire Department, New York Fire Department, Cambridge Fire Department, and Boston Police Department, as well as numerous other police, fire, and ambulance services across the country to support healthier lifestyles and address concerns such as weight loss, cancer, diabetes, and heart disease.
Chloe lives in Cambridge, MA with her four kids, three dogs, and firefighter husband.

Andrea Givens

Andrea Givens
Andrea Givens, MS, RD, CSSD, is an O2X Nutrition Specialist. Andrea has been a Registered Dietitian for over a decade and is a Board-Certified Specialist in Sports Dietetics. She attended San Diego State University for undergrad and completed her dietetic internship through California State University, Sacramento in 2010. Andrea spent her early career building a strong foundation in dietetics working as a clinical dietitian in acute care, including serving veterans as a clinical dietitian at the VA. Transitioning into sports nutrition around 2015, she worked with recreational endurance and CrossFit athletes, Division I collegiate athletes at University of the Pacific in Stockton, CA, spent the 2018 MLB season as a Sports Science Intern for the San Francisco Giants, and was a Sports Nutrition Fellow for USA Volleyball during an Olympic qualifying year (2019).Andrea returned to school and earned master’s degrees in Nutrition and Exercise Physiology concurrently from San Diego State University in 2020. During her graduate program, she began working in human performance research for the military and published data on metabolic demands of cold-water diving in Naval Special Warfare operators.In addition to providing nutrition expertise to O2X tactical athletes nationwide, Andrea currently works on a physiology team in the Warfighter Performance Department of Naval Health Research Center in San Diego, conducting operationally relevant research to optimize readiness in military personnel. She also volunteers on the Research and Education Committee for the Collegiate and Professional Sports Dietitian Association and is a member of the Sports and Human Performance Nutrition Dietetic Practice Group of the Academy of Nutrition and Dietetics.A California native, Andrea is an avid outdoor athlete and has crossed the finish line of numerous half marathons, triathlons, 10Ks, summited Half Dome, and swam from Alcatraz. She is a military spouse and has recently learned how to freedive thanks to her husband.

Kelli Reese

Kelli Reese
Kelli Reese is a Registered Dietitian, Board Certified Specialist in Sports Nutrition and O2X Nutrition Specialist. She completed her undergraduate degree at Ohio University, her dietetic internship at The University of Akron and her master’s degree in nutrition from Arizona State University. Kelli has been a dietitian since 2010 and has worked in numerous areas of nutrition and healthcare including hospitals, long term care facilities, gyms and a halfway house for drug and alcohol recovery, but her real passion lies in sports nutrition. In the past few years Kelli has worked with an array of athletes including competitive powerlifters, military tactical athletes, high school and adult athletes, runners and triathletes. In addition to her Kelli role as O2X Nutrition Specialist, she is a Clinical Dietitian and Wellness Coach at University Hospitals in Cleveland, Ohio and in 2021 opened her own sports nutrition practice: Inso Sports Nutrition. She is the current (2022) President of the Greater Cleveland Academy of Nutrition and Dietetics and was voted Ohio’s 2020 Recognized Dietitian of the Year by the Ohio Academy of Nutrition and Dietetics for her significant contribution to the profession of dieteticsAs an athlete, (having played rugby for seven years before switching to running marathons and half marathons) and personal trainer, Kelli is familiar with the challenges athletes and tactical athletes face on a daily basis. This understanding allows her to take a personal approach in helping clients find nutritional balance when juggling the demands of their sport, jobs and personal life all while remaining competitive and goal oriented.Kelli lives in Cleveland, Ohio where she was born and raised with her husband (and fellow runner), their four year old daughter, cat and dog. In her spare time she enjoys working out, making funny Instagram Reels and collecting house plants. Her nutrition philosophy: food fuels performance, nourishes the soul and has the power to bring us all together.

Laura Moretti Reece

Laura Moretti Reece
Laura Moretti Reece is an O2X Nutrition Specialist who completed her Master’s Degree in clinical nutrition as well as her didactic program in clinical dietetics at New York University. She previously worked as the Primary Nutrition Therapist at Columbus Park Collaborative and Appleman Nutrition in New York City before relocating to Boston in 2015 to join the Female Athlete Program and Sports Medicine/Orthopedics Team at Boston Children’s Hospital.As a Certified Specialist in Sports Dietetics, Laura specializes in sports performance-based nutrition, as well as treating low energy availability, disordered eating, and eating disorders in athletes. Laura has an extensive amount of experience in consulting and collaborating with Olympic and professional athletes, local colleges and universities, as well as professional sport and dance facilities. She is the consulting dietitian for the Boston Ballet Company and Schools, US Rowing, and is an instructor at the Institute for Rowing Leadership in Boston.Laura previously served as the Co-Chair of the International Academy of Eating Disorders Sport and Exercise Special Interest Group, as well as the co-chair of the Boston Children’s Hospital Female Athlete Conference. Laura is also the owner of a Boston based private group practice Laura Moretti Nutrition LLC. She is also a competitive triathlete and a two-time Boston Marathon qualifier and finisher.

Nick Barringer

Nick Barringer
Dr. Nick Barringer is an O2X Nutrition Specialist and highly accomplished expert in kinesiology, nutrition, and performance optimization. He holds a Ph.D. in Kinesiology from Texas A&M University, along with advanced degrees in exercise science and dietetics. As a Registered Dietitian, Certified Strength and Conditioning Specialist, Performance Enhancement Specialist, and Specialist in Sports Dietetics, Dr. Barringer has contributed significantly to military and tactical nutrition research, serving in leadership and academic roles across the U.S. Army, including as Program Director for the Army-Baylor Graduate Program in Nutrition and Assistant Professor at West Point. His extensive military background includes elite training such as Ranger School and Airborne School, earning numerous commendations, including the Legion of Merit and Bronze Star Medal. Dr. Barringer has played a pivotal role in advancing performance nutrition through research, securing grants, and publishing extensively in peer-reviewed journals. He has also presented at major conferences on sports nutrition, supplementation, and tactical performance, further cementing his influence in the field.

Sean Spanbauer

Sean Spanbauer
Sean Spanbauer is a Sport and Tactical Performance Dietitian and retired Army Officer with over 25 years of service. He is no stranger to the human performance industry, having spent 11 years as a personal trainer and 12+ years as a performance dietitian working with world class athletes and the Army’s Special Forces Operators. Prior to his current position, Sean spent a significant portion of his career as an educator, training military healthcare providers as well as working in a clinical setting as an in-patient and out-patient dietitian. He spent 12 months as a Sports Dietitian Fellow with the United States Olympic and Paralympic Committee (USOCP) assigned to work with a variety of athletes and sports teams. For the last 7 years, Sean has been the owner/operator of Nurti-Sean Sports Nutrition Consulting, working with the USOCP, multiple NGBs, various college athletic departments, sports performance organizations, and first responders.In addition to being a Registered Dietitian/Nutritionist, Sean is a Certified Specialist in Sports Dietetics (CSSD) and a Certified Strength and Conditioning Specialist (CSCS). He holds a Bachelor’s Degree in Nutrition and Dietetic from Kent State University and a Master’s Degree in Nutrition from Baylor University.

Deanna Busteed

Deanna Busteed
Deanna Busteed, is a highly experienced performance dietitian, educator, and wellness professional with more than two decades of expertise in sports nutrition, clinical care, and human performance. She currently serves as a Performance Dietitian at the Intrepid Spirit Center at Fort Belvoir, where she provides integrative, evidence-based nutrition support to active-duty service members managing traumatic brain injury, chronic pain, and post-traumatic stress disorder. She also works with O2X Human Performance, delivering science-backed nutrition education to tactical athletes across military, federal, and public safety populations.
Deanna’s career spans collegiate athletics, healthcare, and private practice. She spent nearly a decade as a Sports Dietitian at George Mason University, supporting Division I student-athletes through medical nutrition therapy, performance fueling strategies, and interdisciplinary care. She continues her work at the university as a Senior Fellow in the Center for the Advancement of Wellbeing and as Adjunct Faculty, teaching Sport and Exercise Nutrition. Her additional experience includes dietetic roles in an orthopaedics and physical therapy practice, hospital-based clinical nutrition, and consulting with athletes and individuals managing complex conditions such as eating disorders, RED-S, and nutrient deficiencies.
Deanna is passionate about translating science into practical strategies that enhance health, resilience, and performance. She takes a holistic approach to care, integrating mindful and intuitive eating principles alongside physical training and recovery. In addition to her nutrition work, she is a registered yoga teacher and trauma-informed mindfulness instructor, incorporating mind-body practices to support overall well-being.
Deanna holds a Master of Science in Nutritional Sciences from the University of Massachusetts Amherst and a Bachelor of Science from the University of Rhode Island, where she competed as a Division I swimmer. She is an active contributor to research, publications, and national presentations on sports nutrition, wellness, and performance.

Dorette Franks

Dorette Franks
Dorette Franks, MS, RDN, is an O2X Nutrition Specialist. As a board-certified Registered Dietitian Nutritionist (RDN), Dorette graduated with honors, earning a Master of Science in Nutrition and Human Performance from Logan University, completed a dietetic internship through Iowa State University, received a Bachelor of Science in Dietetics from San Francisco State University, and holds coaching certifications on behalf of USA Triathlon and USA Track & Field.Dorette has worked in the field of nutrition and human performance since 2004. Following the completion of her first Ironman New Zealand in 2001, she quickly established her career as an endurance coach. In 2005, she led as head coach for the San Francisco Nike Women’s Marathon and has continued to coach runners and triathletes to successful Boston Marathon qualifications and Ironman finishes. Dorette is a six-time Ironman finisher, placing 1st in division and 3rd overall female at the Full Vineman, division winner at Ultraman Canada, a three-time Boston Marathon qualifier/racer, and represented Team USA at the USA Triathlon Long Course World Championship. As a clinical sports dietitian she’s worked alongside cardiologists, exercise physiologists, strength trainers, and coaches integrating nutrition support to ultra-cyclists, ultra-runners, and triathletes as they face the most rigorous endurance events, including the Race Across America (RAAM), the Ultraman World Championship, the Ironman triathlon. Dorette addresses performance and health through functional and integrative practices using evidence-based approaches. Her expertise includes pairing nutrition with physiological data (V02, RMR, substrate utilization), biochemical and metabolite testing, sweat and hydration analysis, nutrition for body composition and weight management, mental health (and addiction), gut-health/the gut-brain axis, as well as the menstrual cycle & peri/post-menopause nutrition.Dorette is passionate to impart her knowledge and expertise to others. Her nutrition tips and coaching plans have been published on behalf of the Academy of Nutrition and Dietetics’ Sports Cardiovascular & Wellness Nutrition (SCAN), Triathlete, Runner’s World, Shape, and Women’s Health Magazines. She also conducts speaking events for first responders, in corporate health, universities, and sports events.In her free time, Dorette can be found enjoying open water swims (minus the wetsuit) in San Francisco Bay, riding her bike beyond Mt. Tamalpais, and running the trails with her golden retriever, Leela, who is training to become a First Responder Therapy Dog.

Mary Pat DeHaven

Mary Pat DeHaven
Mary Pat is an O2X Nutrition Specialist. As an accomplished professional in the field of nutrition and dietetics with a passion for promoting healthy living and optimizing performance through proper nutrition. Mary Pat is currently the Director of the Master of Science in Nutrition & Dietetics program at Drexel University, with a specialized focus on sports nutrition. In this role, she not only shares her wealth of knowledge with aspiring nutrition professionals but also contributes to the advancement of the sports nutrition profession.Mary Pat earned her Bachelor of Science degree in Exercise Science from the University of Scranton. Her strong foundation in exercise science laid the groundwork for her deep understanding of the relationship between physical activity and nutrition, setting the stage for her future success. Continuing her academic journey, Mary Pat pursued a master’s degree in human nutrition at Drexel University. This advanced degree provided her with a comprehensive knowledge of human nutrition, enabling her to provide evidence-based dietary guidance to individuals of all ages and backgrounds. Mary Pat DeHaven’s career in nutrition and dietetics spans various healthcare and academic institutions, including The Massachusetts General Hospital and The Children’s Hospital of Philadelphia. During her tenure as a clinical and pediatric dietitian, she honed her skills in providing personalized nutrition counseling to patients with diverse medical conditions. Mary Pat is passionate about improving the health and well-being of others and excited about working with O2X!

Danielle Demarest

Danielle Demarest
Danielle Demarest is an O2X Nutrition Specialist and Board-Certified Specialist in Sports Dietetics. She is originally from South Carolina and attended Clemson University, earning her Bachelor and Master of Science in Food Science, Nutrition, and Dietetics. Go Tigers! Danielle has an extensive history in both collegiate athletics and tactical performance. She is a former NCAA Division I athlete, playing golf for Winthrop University, and has experience working with collegiate athletes at Clemson University. Danielle served in the U.S. Army for 5 years as an active-duty Registered Dietitian, working with Service Members and Veterans across all branches, including U.S. Army Special Operations Command. Her career as a dietitian spans critical care, individualized nutrition counseling, and leadership roles in food service and personnel management, with a focus on optimizing human performance in tactical populations.
Outside of work, Danielle lives in North Carolina with her husband and son and enjoys cooking, running with her dogs, and spending time outdoors. She has completed several half marathons and also enjoys making homemade wine and mead.
As part of the O2X team, Danielle is passionate about simplifying nutrition and helping others apply it effectively in their daily lives.
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Nick Biase
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Nick Biase
Nick Biase, RDN, CSSD obtained his bachelor’s degree in Foods and Nutrition from San Diego State University then completed his dietetic internship with the VA of Greater Los Angeles and Naval Special Warfare Group One. Nick has operated a sports nutrition practice for over 10 years and during that time has worked with a full spectrum of tactical athletes. He also managed a wellness program for the City of San Diego’s First Responders. Having served in both the US Marine Corps and Army he not only understands the science behind sports nutrition but also its practical application by utilizing it to personally achieve a higher level of human performance. Nick is dedicated to helping tactical athletes achieve their goals by simplifying the science and guiding them towards developing a realistic lifelong plan. During his free time, Nick enjoys surfing at home in Southern California and cooking large Italian meals for friends. In addition to being an avid weightlifter he’s also completed several long distance runs to include San Antonio TX - San Diego CA and the Grand Canyon Rim-Rim-Rim.
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Sarah Pflugradt
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Sarah Pflugradt
Sarah is an O2X Nutrition Specialist and registered dietitian who believes that everyone has the potential to perform at a higher level and channel their inner athlete. With a background in clinical dietetics, WIC, and private practice, she is currently an adjunct professor in the Department of Health Studies at American University, focusing on advancing health promotion through knowledge of nutrition, exercise, and lifestyle habits. As a sought-after expert in nutrition communication, Sarah is a nutrition content editor at EatingWell and is a published author of two books. She has a strong foundation in performance nutrition and provides education for high school athletes and parents. Sarah has a PhD in Health and Human Performance from Concordia University—Chicago, where her research focused on the home food environment of competitive swimmers. As an Air Force veteran and military spouse, Sarah’s commitment to veterans’ health is evident in her volunteer work as a nutrition contributor to Team RWB. In her free time, she enjoys running, writing, cooking, and watching her three high-energy teenagers compete in sports.

Tracy Daly

Tracy Daly
Tracy Daly, MS, RD/N, is an O2X Nutrition Specialist, Registered & Sports Dietitian, and holds a master’s degree in nutrition education from The Chicago Medical School. Originally from the Detroit, area, Tracy completed her dietetics studies and dietetic internship there, setting her on a fulfilling career path that combines her passions for health and education. Tracy has been a Registered Dietitian/Nutritionist for over 26 years, working in a variety of settings, including collegiate health, corporate and tactical wellness, research, and fitness facilities. She discovered her passion for working with college students and athletes and has worked with a variety of active individuals for over 20 yeas. She currently serves as an Adjunct Professor in the Kinesiology Department at CSU San Marcos, the Nutrition Department at San Diego Mesa College, and the Public Health Program at National University. Tracy also supports the CSUSM Cougars as their Sports Dietitian and has provided expert nutrition support to athletes at San Diego State University, The University of San Diego, and UC San Diego. Her expertise spans sports nutrition, recovery, behavior modification, disordered eating/eating disorders/body image concerns, and gastrointestinal health. Tracy’s interest in nutrition sparked in college when she recognized how dietary changes could enhance health. Managing her own health challenges as an adult, she found balance through nutrition, Pilates, and mindfulness - a journey that deeply shapes her work today. An active member of the American Sports & Performance Dietitians Association and the Academy of Nutrition and Dietetics’ Sports and Human Performance group, Tracy also gives back to her community. Since 2007, she has volunteered with Rady Children’s Hospital’s canine therapy program and recently adopted Frank, her second therapy dog. Frank serves as a Therapy/Facility Dog at CSU San Marcos, working with student Veterans, athletes, and participating in her Mindfulness classes and the Center for Contemplative Practices.

Amanda Sheaffer

Amanda Sheaffer
Amanda Sheaffer is a Nutrition Specialist at O2X Human Performance. Amanda is also an accomplished Dietitian who has worked in various roles across the nation. She first started on the nutrition team with EXOS during the 2017 Combine class for the NFL draft in California. She then shifted to the Wounded Warrior Project to work with veterans nationally for weight-loss and disordered eating management. She moved back to Chicago, her hometown, to serve as the Associate Director of Food and Nutrition for Cook County Health Hospital Systems and was a part of the first COVID-19 response teams for the city. In 2021, Amanda started her private practice, Chicago Nutrition Clinic and opened a second office in Miami. She now also teaches at Miami Regional University and is completing her Doctorate in Clinical Nutrition at University of North Florida. Her passion is identifying challenging populations and developing realistic and sustainable solutions for individuals and populations alike.
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