Airman 1st Class Thatcher Gore, 757th Aircraft Maintenance Squadron Eagle Maintenance Unit crew chief, performs a postflight check on an F-15 Eagle after the aircraft hit 10,000 flight hours during a sortie at Nellis Air Force Base, Nev., Jan. 25, 2017. To get the aircraft to 10,000 flight hours, more than 100,000 maintenance hours have been put in by maintenance professionals like Gore for the last 30 years. (U.S. Air Force photo by Staff Sgt. Siuta B. Ika)