A U.S. Air Force E-3 Airborne Warning and Control System aircraft, 965th Airborne Air Control Squadron, Tinker Air Force Base, Okla., returns from a training mission over the Nevada Test and Training Range during Red Flag 11-3 at Nellis Air Force Base, Nev., March 10. Red Flag is a realistic combat training exercise involving the air forces of the United States and its allies. The exercise is hosted north of Las Vegas on the Nevada Test and Training Range.