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Photo of the day: A U.S. Air Force B-1 Lancer bomber aircraft assigned to the 77th Weapons Squadron departs for a Nov. 3, 2011, training mission during the integrated tactics phase of the U.S. Air Force Weapons School at Nellis Air Force Base, Nev. The 77th Weapons Squadron, part of the weapons school, provides instructional flying and tactics training for students piloting the B-1 Lancer. (U.S. Air Force photo by Senior Airman Brett Clashman)