There was some truly crazy shit happening in the late '50s-early '60s:

https://en.wikipedia.org/wiki/Project_Plowshare

https://en.wikipedia.org/wiki/Project_Pluto

https://en.wikipedia.org/wiki/Project_Orion_(nuclear_propuls...

https://en.wikipedia.org/wiki/Supersonic_Low_Altitude_Missil...