The Single Switch That Saved the East Coast from Nuclear Disaster Posted by jacquesm on Sunday July 04, 2021 @08:24AM from the theatlantic.com dept. https://www.theatlantic.com/technology/archive/2013/09/the-single-switch-that-saved-the-east-coast-from-nuclear-disaster/279916/ ( 3 comments | 8 points | on HN )
https://en.wikipedia.org/wiki/List_of_nuclear_close_calls
I also assume the parachute on the bombs were not for safety.