This planning deficit is nothing unusual. It would be a tribute to Boeing engineers’ advance planning that the BUFF (Big Ugly Fat, er, Fella) is due to keep flying until at least 2040, when the airplanes will be octogenarians...except that the longevity has been achieved despite the best that military planners could do.

— The B-52 Just Keeps on Flying by Air & Space Smithsonian

Amazing.