2/14/2007 - A B-2 Spirit lands after a Red Flag mission Feb. 12 at Nellis Air Force Base, Nev. All three of the Air Force's stealth aircraft models, the B-2 Spirit, F-117 Nighthawk and F-22, are taking part in Red Flag, which sharpens aircrews' warfighting skills in realistic combat situations. Crews are flying missions during the day and night to the nearby Nevada Test and Training Range where they take part in highly realistic aerial combat. The Air Force and Navy, along with Australia and the United Kingdom militaries, are participating in this Red Flag. (U.S. Air Force photo/Mike Estrada)