Emerald Warrior 2017
U.S. Air Force Tech Sgt. Mark Perkins, a boom operator with the 121st Air Refueling Wing, Ohio Air National Guard prepares to refuel an MC-130J Commando II with the 9th Special Operations Squadron during a training sortie in support of Emerald Warrior 17 March 7, 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 National Guard photo by Senior Airman Ashley Williams)