Staff Sgt. Nicholas Mandello, an electronic environment specialist assigned to the 912th Air Refueling Squadron, March Air Reserve Base, Calif., salutes the aircrew of a KC-135 Stratotanker after marshaling it out for a Red Flag 15-4 sortie at Nellis AFB, Nev., Aug. 25, 2015. Red Flag provides an opportunity for active duty, Reserve and Guardsmen aircrew and maintainers to enhance their tactical operational skills alongside units from around the Air Force. (U.S. Air Force photo by Staff Sgt. Siuta B. Ika)