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U.S. Air Force Staff Sgt. Jeffrey Jin, a 354th Maintenance Squadron aerospace propulsion craftsman, removes a panel from an F-16 Fighting Falcon aircraft Aug. 12, 2016, during RED FLAG-Alaska 16-3, in the phase shop at Eielson Air Force Base, Alaska. Jin is preparing the aircraft for its engine to be removed so the joint service electronic combat systems tester can be fixed. (U.S. Air Force photo by Airman Isaac Johnson)