Very interesting
Late father was w/Lockheed 1950's thru 1990's
Mostly classified after 1960's, but used to say that "we can make anything in the C-130 range into anything, giant flying dishwashers, if that's what somebody wants"
Extraordinarily versatile airframe, still tons in the air.
Used to refit them mostly at the Marietta GA plant but so much has moved to Texas now.