A U.S. Air Force AC-130W Scorpion II aerial gunner reloads 30mm ammunition during a flight at Hurlburt Field, Fla., April 24, 2013, in support of exercise Emerald Warrior 2013. Emerald Warrior is an annual two-week joint/combined tactical exercise sponsored by U.S. Special Operations Command designed to leverage lessons learned from operations Iraqi and Enduring Freedom to provide trained and ready forces to combatant commanders. (DoD photo by Senior Airman Matthew Bruch, U.S. Air Force/Released)