F-22A Raptors taxi down a runway at Langley Air Force Base, Va, Feb. 27, 2011. Part of a two -day exercise, Langley Airmen from the 633d Air Base Wing, 1st Fighter Wing and 192nd Fighter Wing worked together to practice deploying people, equipment and aircraft for contingency operations on short notice. (U.S. Air Force photo by Staff Sgt. Logan Tuttle/Released)