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Aye, the Lockheed A-12. It was apparently the 12th iteration of the CIA's "Archangel" program, hence "A-12."

Knowing the CIA, that designation may have been misdirection too. 'Main battle tanks' are called 'tanks' today because of WWI era misdirection. Instead of calling them "armoured tractors" or something descriptive like that, the British called them "water carriers." The abbreviation of that (w.c.) was considered crude though, so they were renamed "tanks" as in a container for carrying water. This was to ensure any German spy who overheard the wrong conversation would get the wrong impression.

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