One September morning in 1983, Lt. Col. Stanislav Petrov, a 44-year-old commanding officer with the Soviet Union's Air Defense Forces, saved the world from erupting into nuclear war. Petrov died on May 19 ... at his home in the Moscow suburb of Fryazino. According to the New York Times, he lived at his Fryazino home alone on a pension. How did Petrov "save the world?" On Sept. 26, 1983, Oko (the Soviet Union's early-warning satellite system for nuclear attack) detected that the United States had launched five ballistic missiles, all headed toward the USSR. But as the alarms went off and screens flashing the word "LAUNCH" lit up, Petrov, who was just a few hours into his shift as duty officer at command center Serpukhov-15, remained calm. "For 15 seconds, we were in a state of shock," he told The Washington Post in 1999. Petrov's gut feeling ... led him to believe the launch reports were probably false. "When people start a war, they don't start it with only five missiles," he remembered thinking. He said his decision to stand down ... was "at best, a '50-50' guess." And, as Wired Magazine put it in 2007, "he hoped to hell he was right." That gut feeling and Petrov's calm, common-sense analysis saved the world from potential catastrophe. The satellite that signaled the false alarm had picked up the sun's reflection atop the clouds, mistaking it for a missile launch. After the classified incident became public ... Petrov went on to earn the German Media Prize in 2012 (other GMP winners include Nelson Mandela, Dalai Lama and Kofi Anan).