I was only 6 when the 50's came to close and while I remember "air raid" drills as they were called on Long Island NY, the real anxiety didn't start until the 60's.
Perhaps I wasn't quite as sophisticated, as a first grader, as some of the other posters on this thread, but I took the air raid drills seriously, and they were very creepy.
First of all they were announced by a siren rather than a bell, as was the case for Fire Drills, and the sound was chilling.
Secondly, we all moved out into the halls, put our noses up against the brick walls and locked our hands, behind us and on our necks. We were told this would save us from broken necks when the ceiling and walls collapsed. We had to be silent and still, and for a bunch of little kids this was torture. Everyone fidgeted and everyone got yelled at by teachers.
Contrast this with a fire drill when everyone marched out of the building into the sunlight. We still weren't supposed to talk, but we did and we could release any nervous energy by moving around. It was easy to tell, even as a little kid, that the teachers took the air raid drills more seriously than the fire drills.
Years later I came to the same conclusion as has been expressed here: The air raid drills were pointless since we would all be vaporized by a bomb that fell anywhere near our school, however David is right, the air raid drill weren't intended to save us from a direct or near direct hit, they were intended to help protect us if a nuke was dropped on New York City (as it almost certainly would have been) and the resulting hurricane force winds made it as far as my town out on the Eastern half of Long Island.
Thank God we never had to find out if the procedure would have made any difference in terms of casualties. The radiation probably would have killed most of that survived the first hit, but I believe that in addition to the procedure having some potential utility, it was meant to, in some way, placate the adults, by showing them a) the government was on the job and b) a nuclear attack was surrvivable.
The real anxiety developed, for me, during the Cuban Missile Crisis which, of course, was in 1963. At age 9 I had a fair understanding of what was going on (at least in terms of what the News of the day was telling us) and I could easily tell that my parents were very nervous. It was a scary time.
I recall having nightmares from time to time about some country, Russia or China "dropping the bomb," and I specifically remember waking up in terror in the middle of the night shouting "Please don't drop the bomb!"
I also recall when Khrushchev was ousted in 1964 and thinking we were in a lot of trouble. Since the Cuban Missiled Crisis was defused under his regime I had come to the conclusion that he was the only sane Russian leader, and I was certain that the very grim looking Leonoid Brezhnev was a very dangerous man.
At the time, Alexei Kosygin was sharing power with Brezhnev, but he reminded me of Stan Laurel and so I didn't see him as a threat. It turns out I was right, because Brezhnev made short work of him and assumed full power.
There is reason to consider the Cold War, to have been WWIII, because while the primary antagonists never faced off against one another in a
Hot War (except during covert operations instigated by one side or the other) there were proxy wars occurring all over the world.
See
http://en.wikipedia.org/wiki/Proxy_War
In 7th grade I wrote a "term paper" entitled "The Spread of Communism in Southeast Asia" Actually got an "A+" on it but maybe the teacher was a right-wing Hawk. The Vietnam War was underway and I was a supporter. We had to stop the Communists from overrunning Asia
The Soviet Union was as intent upon global domination as any previous would-be world conquerer. Obviously there came a time when they realized it wasn't going to happen and the USSR eventually fell apart, but they, along with Red China, were very much our determined foes during this period.
I wouldn't call either of them our friends now.