Portside

Coded switches to prevent the unauthorized use of nuclear weapons were finally added to the control systems of American missiles and bombers in the early 1970s. The Air Force was not pleased, and considered the new security measures to be an insult, a lack of confidence in personnel. Although the Air Force now denies this claim, according to more than one source I contacted, the code necessary to launch a missile was set to be the same at every Minuteman site: 00000000.