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  These were built usually underground in the 1950s during the fear of nuclear war. People stayed in the fallout shelters for years.
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  Actors, Directors, producers, & etc. thought to be communist & prevented them from working there during the red scare.
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  This was an expression used for 1950s nuclear air raid drill.
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  President Fidel Castro took over Cuba in 1952.
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  Julius & Ethel Rosenberg got executed on June 19, 1953. In 1951 they were found guilty of giving the secrets of the Atomic bomb to the Russians.
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  A belief that the Soviet Union was attempting to spread communism world wide, including in the U.S.
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  Failed invasion of Cuba by CIA trained Cuban rebels in April 1961 embarrassment to JFK administration
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  13 days in 1962 in which the US, Cuba, and the Soviet Union came to the brink of nuclear war over the installment of the missile sites in Cuba by Soviets.