(From left) Cmdr. Nora Perez, head of the Combat Casualty

(From left) Cmdr. Nora Perez, head of the Combat Casualty Care Research Department, Naval Medical Research Unit-San Antonio, and Lt. Cdr. Anne McKeague, head of the Expeditionary Medicine Division, Combat Casualty Care Department, NAMRU-SA, brief Vice Adm. Matthew L. Nathan, U.S. Navy surgeon general and chief of the Bureau of Medicine and Surgery on tourniquet research being conducted at the unit using the HapMed Combat Medic Trainer. In the background are Judge E. Kelly, student intern, and Lincoln Miller.