U.S. Air Force Senior Airman Dyllan Jones, 67th Aircraft Maintenance Unit F-15 Eagle crew chief changes the oil of an F-15 Eagle Jan 10, 2017, at Kadena Air Base, Japan. The F-15 Eagle is an all-weather, extremely maneuverable, tactical fighter designed to permit the Air Force to gain and maintain air supremacy over the battlefield. (U.S. Air Force photo by Senior Airman Omari Bernard/Released)