Sorry OP but you made me smile with your worries, good job you state dob as 1983, if you had been 18 in 83 like myself and a few othger posters on here you probably wouldnt have made it through.
Seriously while we now have the new threat of the terrorist bomb, as a previous poster wrote the 60's and 70's where cold war time. They really did have "what to do if we get nuked" public information films.
When I was 15/16 we did a play in English at school which was all about a school trip to a goverment/ military bunker, basic story was all the alarms go off, kids and teacher are locked in a room but can hear internal communications and gradually realsie that a nuclear war has started and they are sitting in a bunker while the world burns. We then went on to discuss the various reactions of the characters, cracking up, denial, realisation that everyone else in the bunker was over 30, or that the girls where the only females of child bearing age etc...
Think you might have struggled...
However I am on record as saying in front of freinds that I fully expect to see a terrorist nuke in my lifetime, and I said it in 1991...