I recall a story by Les Minchew, 355th ace, career USAF, contractor/advison Air America during Laos and Vietnam.. the story was this. He was walking across field toward a Gooney Bird with a legendary Air America pilot who flew the Hump for two tours in WWII, flew for Nationalist China, absorbed in Air America in ~ 46-47 and flew, and flew.
Anyway, a replacement pilot just assigned struck up a conversation with Johnson. "Sir, I know you have a lot of time. Just out of curiosity - How much time do you have in those - pointing to an old C-47 across the way. Johnson paused to look at it and responded after a couple of seconds "About 4600 hours, maybe more". The young pilot looked at him - amazed - and blurted out "I thought you had a lot more time in the '47?.
To which Johnson replied " I thought you meant THAT one".
Johnson was KIA and has a star at Langley... alleged to have north of 70,000 hours in C-47/C46/C54.