U.S. Air Force Senior Airman James Gunning, 8th Aircraft Maintenance Squadron electrical and environmental specialist assigned to Kunsan Air Base, South Korea, changes a water sock filter on an F-16 Fighting Falcon during RED FLAG-Alaska 14-3 Aug. 18, 2014, Eielson Air Force Base, Alaska. Gunning supported the aircraft which flew two sorties a day throughout the exercise. (U.S. Air Force photo by Senior Airman Peter Reft/Released)