A U.S. Air Force B-1 Bomber takes off at dusk, Sept. 28, 2011, at Dyess Air Force Base, Texas. Switching aircraft from two sorties per day to a single sortie cut time wasted in minor maintenance, and scrubbing sorties delayed by more than two hours keeps later sorties from being postponed. (U.S. Air Force photo by Airman 1st Class Cierra Bullock/Released)
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