A U.S. Army Soldier from the 7th Special Forces Group rides in a vehicle during night training as part of Emerald Warrior at Hurlburt Field, Fla., April 26, 2015. Emerald Warrior is the Department of Defense's only irregular warfare exercise, allowing joint and combined partners to train together and prepare for real world contingency operations. (U.S. Air Force photo by Staff Sgt. Kenneth W. Norman/Released)