Maintainers with the 27th Aircraft Maintenance Unit out of Joint Base Langley-Eustis, Va., check for structural damages on an F-22 Raptor during Red Flag 17-1 at Nellis Air Force Base, Nev., Jan. 27, 2017. If damages are found, low observable aircraft structure technicians must repair them to ensure the aircraft maintains its stealth capability. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)