Human performance STAFF






Human Performance Program Director

Lt. Colleen Cronin

LT Cronin obtained a Bachelor’s degree in Nursing from Simmons University in Boston, MA in 2016 and started her career at Duke University and WakeMed Hospitals in Durham and Raleigh, NC. In 2019, LT Cronin decided to take her passion for caring for others to the military and commissioned as an Active-Duty Critical Care Nurse in the US Navy. During her time in the Navy, she has developed a deep appreciation for Total Force Fitness and Human Performance Optimization, and is currently pursuing a Master’s in Applied Physiology and Kinesiology from the University of Florida. As the Human Performance Program Director, she is excited to help Marines and Sailors become more optimized holistically and provide them with knowledge and skills that they can take with them to feel and perform at their best.


Strength and Conditioning Coach

Levi is New Hampshire native and prior Marine who served on active duty from 2013-2018. Upon leaving the Marine Corps, he went on to pursue a Bachelor’s degree in Exercise Science from Keene State College, and a Master’s degree in Exercise Science from Appalachian State University.

Levi is a Certified Strength & Conditioning Specialist and Tactical Strength & Conditioning Facilitator through the National Strength & Conditioning Association with over 6 years of experience coaching collegiate athletes, firefighters, and all branches of military.



Sports Dietician

Summer Tietz

Summer is originally from Milwaukee, WI where she earned a Bachelor’s in Exercise and Sports Science from the University of Wisconsin – La Crosse, and a Post-Baccalaureate Certificate in Dietetics from Mount Mary University.  

Summer is a Registered Dietitian and Certified Specialist in Sports Dietetics, as well as a Certified Strength & Conditioning Specialist and a Level 1 Anthropometrist through the International Society of Anthropometrics and Kinetics. She has over 6 years of professional experience and has held positions with the University of Wisconsin, EXOS Gulf Breeze, Rutgers University, and the U.S. Army Holistic Health and Fitness Program.