Big John wrote:

I have also heard about over night
engine changes on CO's birds, so there may be some or just a little
truth in these war stories?

"Book" time for an engine change on a B-17 was 5 hours.

George Patterson
Why do men's hearts beat faster, knees get weak, throats become dry,
and they think irrationally when a woman wears leather clothing?
Because she smells like a new truck.