Cheers to the late Lt. Colonel Petrov

who on this date in 1983 took the time to recheck the data before passing it on. ETA-- Also looked up Flotilla Chief-of-Staff Vasili Arkhipov, who made a similar call as one of the senior officers on a nuclear sub during the Cuban Missile Crisis, and woah, he was also a survivor of the K-19 incident the year before that?! Which may have been part of the reason he was loathe to start firing nukes.