Just ran across this -- a nationwide nuke drill in 1954 with NYC, DC, Chicago highlighted:
https://www.youtube.com/watch?v=f6zO_gdRQ9IAnother, bigger one in 1955:
https://www.youtube.com/watch?v=X_f2al0WMTUNYC civil defense drill - 1953
https://www.youtube.com/watch?v=H8l_HNRmkPc1951 -- biggest nuke drill in America to-date
https://www.youtube.com/watch?v=cGt04no33FIFortunately, everyone had the benefit of the government's civil defense films, such as this jewel from 1951. Today, little Tony would have the added benefit of a bicycle helmet. And the radiation app on his smartphone.
https://www.youtube.com/watch?v=IKqXu-5jw60.