U.S. Air Force Staff Sgt. Joshua Simmons, 28th Aircraft Maintenance Squadron aircraft electrical and environmental journeyman, Ellsworth Air Force Base, S.D., waits for a B-1B Lancer to depart for a training mission during Red Flag 12-2 Jan. 24, 2011, at Nellis Air Force Base, Nev. 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.