Capt. Diana Mitchell, a medical officer assigned to the 926th Aerospace Medicine Squadron, assesses simulated injuries on Master Sgt. Frank Preuss during Operation Joint Medic at Camp Cobra on Nellis Air Force Base, Nev., March 27, 2015. The exercise helped medical personnel handle stressful situations with minimal resources. (U.S. Air Force photo by Tech. Sgt. Colleen Urban)