A U.S. Air Force 9th Special Operations Squadron pilot reads through a checklist after a flight on an MC-130J Commmando II during Emerald Warrior 17 at Hurlburt Field, Fla., Feb. 28, 2017. Emerald Warrior is a U.S. Special Operations Command exercise during which joint special operations forces train to respond to various threats across the spectrum of conflict. (U.S. Air Force photo by Staff Sgt. Corey Hook)