A U.S. Air Force Airman observes a training scenario during Defender’s Edge at Langley Air Force Base, Va., Sept. 12, 2014. DEFED is a training program mandated by Air Combat Command for security forces personnel, which is designed to provide realistic trainings to prepare members mentally and physically for any situation that may arise in a deployed environment or at home installation. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)