U.S. Air Force Staff Sgt. Deirdre Baker, 1st Maintenance Squadron, performs low-observable maintenance on an F-22 Raptor from the 94th Fighter Squadron at Nellis Air Force Base, Nev., Aug. 21, 2017. The 94th FS is currently deployed to Red Flag 17-4, taking part in an multi-dimensional simulated air and ground combat environment. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)