1936 - The first electric generator at Hoover Dam goes into full operation.
1942 - World War II: In the Battle of the Santa Cruz Islands during the Guadalcanal Campaign, one U.S. aircraft carrier is sunk and another carrier is heavily damaged, while two Japanese carriers and one cruiser are heavily damaged.
1970 - Muhammad Ali boxes for the first time after Ali's three-year hiatus due to draft evasion.
1977 - Ali Maow Maalin, the last natural case of smallpox, develops a rash in Somalia. The World Health Organization and the Centers for Disease Control and Prevention consider this date to be the anniversary of the eradication of smallpox, the most spectacular success of vaccination.
1979 - Park Chung-hee, President of South Korea, is assassinated by Korean CIA head Kim Jae-gyu.
2002 - Approximately 50 Chechen terrorists and 150 hostages die when Russian special forces troops storm a theater building in Moscow, which had been occupied by the terrorists during a musical performance three days before.
2003 - The Cedar Fire, the third-largest fire in California history, kills 15 people, consumes 250,000 acres (1,000 km), and destroys 2,200 homes around San Diego.
2015 - A 7.5 magnitude earthquake strikes in the Hindu Kush mountain range in northeastern Afghanistan, killing 398 people and leaving 2,536 people injured.