"The siren howled, but I just sat there for a few seconds staring at the big, back lit, red screen with the word 'launch' on it." ‘Gut instinct’ told Lt Col Stanislav Petrov that apparent launch of US missiles was actually early warning system malfunction. Check out the article from the Guardian here: https://www.theguardian.com/world/2017/sep/18/soviet-officer-who-averted-cold-war-nuclear-disaster-dies-aged-77?CMP=Share_iOSApp_Other