U.S. aeromedical evacuation Airmen exit a C-17 Globemaster III aircraft to take up security positions around the Geronimo landing zone during Joint Readiness Training Center (JRTC) 14-05 training at Fort Polk, La., March 14, 2014. The JRTC provides U.S. military units and personnel with realistic pre-deployment training scenarios in all aspects of armed conflict.