Keeping Presidents in the Nuclear Dark (Episode #1: The...
Rated • 3 reviews • nuclear • cdi.org
"... These long-range nuclear-tipped missiles first came on line during the Cuban missile crisis and grew to a force of 1,000 during the McNamara years ... McNamara personally saw to it that these special locks (known to wonks as "Permissive Action Links") were installed on the Minuteman force, and that he regarded them as essential to strict central control and preventing unauthorized launch.
... SAC remained far less concerned about unauthorized launches than about the potential of these safeguards to interfere with the implementation of wartime launch orders. And so the 'secret unlock code' during the height of the nuclear crises of the Cold War remained constant at OOOOOOOO."

