There's a Bert the Turtle public service cartoon that goes along with this, if memory serves.
The other day, while visiting my parents, my sister (who is almost two years older than me) was remembering how in the early '60s in our neighbourhood there was an air raid siren (or something like that) and when it sounded our mother would get us in the house and we would have to go into the basement until we got the all clear. My memory is usually better than my sister's, but I only vaguely remember this. I do remember during the October missile crisis, we would stare at the skies and look for the planes and we went through these drills. But according to my sister this was a more regular thing. Our mother, of course, doesn't remember any of it, because her memory has become very narrow for certain things. I tried to explain to my sister why this would be normal--given the historical context and our geography--but it still seems strange for Vancouver of all places in the '60s to be having these alarms.