Air Force E-3G Airborne Warning and Control System
U.S. Air Force Staff Sgt. Greg Pfeffer, a flight engineer for the 964th Airborne Air Control Squadron, Oklahoma City, on an E-3G Airborne Warning and Control System aircraft, is pictured after a mission above the Joint Pacific Alaska Range Complex during Exercise Northern Edge June 25, 2015. Thousands of service members from all the branch services including active duty, Reserve and National Guard units participated. (U.S. Air Force photo/ Staff Sgt. William Banton)