The U.S. Air Force’s fleet of B-52H heavy strategic bombers are on track to becoming a fleet of flying centenarians. The service wants to purchase over 600 new engines for its B-52s, ensuring that the “Big Ugly Fat Fella” can fly on to 2050 or later. This will practically ensure that some bombers, delivered in the early 1960s, will still be dropping bombs in the early 2060s.