It is 00.40 pm, 26 September 1983. Lieutenant-Colonel Stanislav Petrov, the duty commander in charge of monitoring the Soviet Union’s early warning satellites designed to identify American missile attacks, is carefully checking his panels. Suddenly, the alarms roar into loud action. The word ‘Launch’ flashes onto his screen in large red letters. For the next 15 seconds, one of the satellites reports that five American Minuteman missiles have been launched and are heading towards the Soviet Union.