Getting through the History of the page (I love wikia, thank you) this is what was first written: Timeline (1983: Doomsday) === September 19, 1983- Colonel Gennady Akrimov replaces Col. Stanislav Petrov as watch officer at the Serpukhov-15 bunker near Moscow, which monitors for a US missile attack on the Soviet Union. Colonel Petrov is re-assigned to a bunker near Odessa. Chinese forces, woefully caught by surprise by the Soviet attack, were only able to launch 30% of their weapons at the USSR. Most hit cities and military bases already destroyed by American missiles and bombers. etc.