Soviet military officer Stanislav Petrov, whose job involves detection of enemy missiles, is warned by Soviet computers that the United States has launched a nuclear missile at Russia. Petrov deviates from procedure, and, instead of informing superiors, decides the detection is a glitch. When the computer warns of four more inbound missiles he decides, under much greater pressure this time, that the detections are also false. Soviet doctrine at the time dictates an immediate and full retaliatory strike, so Petrov’s decision to leave his superiors out of the loop very possibly prevents humanity’s obliteration. Petrov’s actions remain a secret until 1988, but ultimately he is honored at the United Nations.