Other serious close calls
In November 1979, a recorded scenario describing a Russian nuclear attack had been entered into the US warning system NORAD. The scenario was perceived as a real full-scale Soviet attack. Nuclear missiles and bombers were readied. After six minutes the mistake became obvious. After this incident new security routines were introduced.
Despite these changed routines, less that one year later the mistake was repeated – this time more persistent and dangerous. Zbigniew Brzezinski, the US national security adviser, was called at three o’clock in the morning by a general on duty. He was informed that 220 Soviet missiles were on their way towards the USA. A moment later a new call came, saying that 2,200 missiles had been launched.
Brzezinski was about to call President Jimmy Carter when the general called for a third time reporting that the alarm had been cancelled.