Marines with Marine Fighter Attack Squadron (VMFA) 211 “Wake Island Avengers,” 3rd Marine Aircraft Wing, stand by as a pilot conducts preflight checks in an F-35B Lightning II on the first day of Red Flag 17-3 at Nellis Air Force Base, Nev., July 10. Red Flag 17-3 is a realistic combat training exercise involving the U.S. Air Force, Army, Navy and Marine Corps and this iteration is the first to have both the Air Force’s F-35A Lightning II and the Marine Corps’ F-35B Lightning II, which is capable of short takeoff vertical landing (STOVL). (U.S. Marine Corps photo by Sgt. Lillian Stephens/Released)