Vasili Arkhipov, of course. Same reason, too:

"On 27 October 1962, during the Cuban Missile Crisis, a group of eleven United States Navy destroyers and the aircraft carrier USS Randolph located the diesel-powered nuclear-armed Soviet Foxtrot-class submarine B-59 near Cuba. Despite being in international waters, the Americans started dropping practice depth charges, explosives intended to force the submarine to come to the surface for identification. ... The captain of the submarine, Valentin Grigorievitch Savitsky, believing that a war might already h... (read more)