ROYAL AIR FORCE FAIRFIELD, United Kingdom - A U.S. Air Force B-52 Stratofortress based out of Barksdale Air Force Base, La., participates at the Royal International Air Tattoo July 17, 2010, at RAF Fairford, United Kingdom. RIAT is held annually and boast itself as "the world's largest military airshow." (U.S. Air Force photo by Chief Master Sgt. Greg Wade)