In 1864, a Colorado militia launched an unprovoked attack on an encampment of Cheyenne and Arapahoe tribal members, killing an estimated 230 people.

In 1929, Navy Lt. Cmdr. Richard E. Byrd, pilot Bernt Balchen, radio operator Harold June and photographer Ashley McKinney made the first airplane flight over the South Pole.

In 1961, Enos the chimpanzee was launched from Cape Canaveral aboard the Mercury-Atlas 5 spacecraft, which orbited Earth twice before splashing down safely south of Bermuda.

In 1981, film star Natalie Wood drowned at age 43 while boating off California’s Santa Catalina Island with her husband Robert Wagner and actor Christopher Walken.

In 1987, a Korean Air 707 jetliner en route from Abu Dhabi to Bangkok was destroyed by a bomb planted by North Korean agents, kill

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