A maintainer assigned to the 22nd Aircraft Maintenance Squadron, McConnell Air Force Base, Kan., watches an F-22 Raptor taxi during Red Flag 15-4 at Nellis AFB, Nev., Aug. 25, 2015. Red Flag involves a variety of attack, fighter, bomber, reconnaissance, electronic warfare, airlift support and search and rescue aircraft. (U.S. Air Force photo by Staff Sgt. Siuta B. Ika)