Unfortunately there isn't as much American fil. version of Threads of Q.E.D that engages in analysis of the Civil defense concepts. Most nuclear critism films take the conceps for granted but describe all the stuff that they would fare see Testament and Day After. Public Fallout shelters would be interesting to see how many people actually recieved the training described in the 80s? In a third world war it is possible that training could be launched in bulk and it would make the survival phase and post attack order much easier in places with little fallout protection and needing of a public Fallout shelter. But beyond discussions of effectiveness there are loads of movies that can be made about life in public Fallout shelters. It would probably be worse then described if food ran out, and radiation could still kill so there would be grim dark stuff going in.