See what happened in history on November 22 by watching the video of This Day in History. On November 22, 1906, Morse Code was accepted as the universal S.O.S. signal for ships in distress. On November 22, 1986, Mike Tyson made history. Tyson became the youngest person ever to win the World Heavyweight Championship in boxing. He knocked out his opponent in the second round. On November 22, 1988, the B-2 Stealth Bomber was unveiled, and it made its combat debut in Kosovo eleven years later. Most importantly, on November 22, 1963, President John F. Kennedy was assassinated in Dallas, Texas. He was shot twice, and an hour after his death Lee Harvey Oswald was arrested for the crime. This event left the nation in mourning.