10/31/2012 - A B-52H Stratofortress sits in a hanger on Barksdale Air Force Base, La., Oct. 31. The B-52 provides the backbone of the bomber force with the ability for global attack and precision engagement. The bomber is capable of flying at high subsonic speeds at altitudes up to 50,000 feet. (U.S. Air Force photo/Senior Airman Sean Martin)(RELEASED)

10/31/2012 - Two B-52H Stratofortress bombers stick out of a hanger on Barksdale Air Force Base, La., Oct. 31. The B-52 provides the backbone of the bomber force with the ability for global attack and precision engagement. The bomber is capable of flying at high subsonic speeds at altitudes up to 50,000 feet. (U.S. Air Force photo/Senior Airman Sean Martin)(RELEASED)