Protect and Survive - All Films (1976) [Digitally Enhanced] 

This series of "Protect and Survive" films from 1976 were born out of the looming threat of nuclear attack emanating from Russia at the time.
Thankfully the situation deescalated and conflict was averted along with the potential for catastrophic loss of civilian life.
This audio / visual recording is in the public domain and therefore free from copyright restrictions.