Duluth bear incident
- "An honorable mention goes to the Duluth bear, in which a guard saw a bear climbing a fence at an Air Force base and rang an alarm. The alarm connected to other nearby bases, but one of them was wired wrong, so instead of "intruder alert!" they got the "Nuke Russia Now!" alarm. Nuclear armed jets were on the runways ready to take off before the mistake was rectified." "5 times we almost nuked ourselves by accident".
- "False alarm: How a bear nearly started a nuclear war". LACrosse Tribune. January 30, 2009. Retrieved 19 October 2010.
- Scott Douglas, Sagan (1993). The limits of safety : organizations, accidents, and nuclear weapons. Princeton University Press. ISBN 9780691032214. OCLC 27429286.