U.S. Army Humvees are parked in the foreground of a simulated Afghanistan village at the Joint Readiness Training Center, Fort Polk, La., Jan. 16, 2014. Service members at JRTC 14-03 are educated in combat patient care and aeromedical evacuation in a simulated combat environment. (U.S. Air Force photo by Master Sgt. John R. Nimmo, Sr./Released)