That was one hell of a read, but well worth it. Thank you for taking the time to post all of that.
Heres a secrecy event that will make you laugh (or not as the case may be).
Northrop built a stealth aircraft prototype, it didn't win its competition, so it was the loser and as such got taken out into the desert and buried, and the location never marked at all.
20 years on, the government needed it in a hurry, and there was silence all around as the head of design had to admit they didn't know where it was as all those who buried it took the secret to their graves.