Duck and Cover Atomic Nuclear Film
Hands down (and everything else), this is the most famous civil defense film of them all. This film for children, through the person of Bert the Turtle, teaches kids what to do in the event an atomic bomb is dropped. Just as Bert has a shell, kids have to learn how to take cover in their own way in case of a nuclear attack. Comparisons are made between things children already know and things that are like them in an atomic explosion - sunlight and atomic flash, sunburn and radiation, etc. - all in order to emphasize and impress upon them the danger. It's all done in an effort to communicate one over-riding message - kids must learn to fall to the ground and cover their necks and heads - in other words, to duck & cover!