https://www.nsa.gov/portals/75/documents/news-features/decla...
https://www.nsa.gov/portals/75/documents/news-features/decla...
http://web.mit.edu/STS.035/www/PDFs/flamm.pdf
I'm off to figure out what instructions were removed from Atlas II when AFSA granted approval for it to be sold commercially. (I feel like I've read about this before and they were to-do with bit population but I can't rightly recall...)
Some good came out of that, but there was a long detour into cryogenic computing. They found a way to make gigahertz components, cryotrons. The trouble was, they couldn't make them small, or cheap, or integrated. So it was a dead end. What's come out of NSA over the years indicates that a full cyrotron computer was never built, but some "analytic tools", probably key-testers of some sort, were made. (The WWII Bombe and Colossus machines were key-testers, like Bitcoin miners, not general purpose computers.)