U.S. Navy Petty Officer 1st Class Marvin Gambito, a hospital corpsman with 3rd Marine Expeditionary Brigade, III Marine Expeditionary Force and Task Force 76/3, checks the tightness of a tourniquet on U.S. Marine Lance Cpl. Guadalupe Garcia, an administration specialist, at a Tactical Combat Casualty Care (TCCC) course on Camp Courtney, Okinawa, Japan, Apr. 6, 2023. TCCC was developed by the U.S. Department of Defense Health Agency (DHA) Joint Trauma System to teach evidence-based, life-saving techniques and strategies for providing the best trauma care on the battlefield.