… is entitled “The Power of Decision,” and was recently declassified. It
may be the first (and perhaps the only) U.S. government film depicting
the Cold War nightmare of a U.S.-Soviet nuclear conflict. The U.S. Air
Force produced it during 1956-1957 at the request of the Strategic Air
Command. Unseen for years and made public for the first time by the
National Security Archive, the film depicts the U.S. Air Force’s
implementation of war plan “Quick Strike” in response to a Soviet
surprise attack against the United States and European and East Asian
allies.
Check it out:
(Source.)