A combat controller with Special Tactics Training Squadron,

A combat controller with Special Tactics Training Squadron, adjusts his gear at Hurlburt Field, Fla., before conducting free fall parachute training during Emerald Warrior 2015, April 28, 2015. More than 25 airmen conducted the 5,000 foot jump into a secured landing zone to practice tactical insertions. Emerald Warrior is a joint exercise led by Air Force Special Operations Command that provides pre-deployment training for U.S. and partner nation special operations forces and interagency elements. (U.S. Marine Corps photo by Cpl. Alexander Mitchell/released)