U.S. Air Force Senior Airman Zachary Freeman, aeromedical service journeyman, from the 18th Aeromedical Evacuation Squadron, Kadena Air Base, Okinawa, Japan, gives the sign for airmen to come towards him during a field exercise at the Joint Readiness Training Center (JRTC), Alexandria, La., March 13, 2014. Service members at JRTC 14-05 are educated in combat patient care and aeromedical evacuation in a simulated combat environment. (U.S. Air Force photo by Staff Sgt Joseph Araiza/Released)