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

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?"