[xyzzy123]

Project MKUltra, Tuskagee, Operation "Green Run", "Igloo White"...

[ethbro]

M28 Davy Crockett, Project 705 / Alfa submarines, Operation Gladio, Duga radar, Project Sanguine / ZEVS, Project Azorian, SOSUS, TACAMO

Notably, most of those are answers to "How can we throw money at something to mitigate the risk of getting nuked?"