Duck and Cover was a Civil Defense film (sometimes also characterized as a social guidance film) produced in 1951 (but first shown publicly in January 1952) by the United States federal government's Civil Defense branch shortly after the Soviet Union began nuclear testing.
Written by Raymond J. Mauer and directed by Anthony Rizzo of Archer Productions and made with the help of schoolchildren from New York City and Astoria, New York, it was shown in schools as the cornerstone of the government's "duck and cover" public awareness campaign. The movie states that nuclear war could happen at any time without warning, and U.S. citizens should keep this constantly in mind and be ever ready.
The film starts with an animated sequence, showing an anthropomorphic turtle walking down the road. A chorus sings the Duck and Cover theme.While this goes on, Bert is attacked by a monkey holding a string from which hangs a lit firecracker. Bert ducks into his shell in the nick of time, as the firecracker goes off and blows up both the monkey and the tree in which he is sitting. Bert, however, is shown perfectly safe, because he has Ducked and Covered.