A U.S. Air Force Special Tactics Airman assigned to the 24th Special Operations Wing pulls security while another Special Tactics Airman radios an incoming aircraft during Emerald Warrior 16 at Camp Shelby Joint Forces Training Center, Miss., May 7, 2016. Emerald Warrior is a U.S. Special Operations Command-sponsored mission rehearsal exercise during which joint special operations forces train to respond to real and emerging worldwide threats. (U.S. Air Force photo by Senior Airman Colville McFee)