This is a B-52 Stratofortress at the Air Force Test Flight Center Museum, at Edwards Air Force Base. According to the museum, the first B-52 first took flight in 1952. Eventually, nearly 750 were build. "Records set by B-52s include the world's first nonstop round-the-world flight by a jet aircraft and the first hydrogen bomb drop. B-52s began flying combat missions in Southeast Asia...(in) 1965." Eventually, B-52s flew 126,615 combat sorties, during which 17 were shot down.