Nixon formally authorizes American combat troops to take part in the Cambodian campaign. 1973 – The Dark Side of the Moon by Pink Floyd, recorded in Abbey Road Studios goes to number one on the US Billboard chart, beginning a record-breaking 741-week chart run. 1975 – General Cao Văn Viên, chief of the South Vietnamese military, departs for the US as the North Vietnamese Army closes in on victory. 1977 – The Red Army Faction trial ends, with Andreas Baader, Gudrun Ensslin and Jan-Carl Raspe found guilty of four counts of murder and more than 30 counts of attempted murder. 1978 – The President of Afghanistan, Mohammed Daoud Khan, is overthrown and assassinated in a coup led by pro-communist rebels. 1986 – High levels of radiation resulting from the Chernobyl disaster are detected at a nuclear power plant in Sweden, leading Soviet authorities to publicly announce the accident. 1988 – Near Maui, Hawaii, flight attendant Clarabelle "C.B." Lansing is blown out of Aloha Airlines Flight 243, a Boeing 737, and falls to her death when part of the plane's fuselage rips open in mid-flight. 1994 – Former Central Intelligence Agency counterintelligence officer and analyst Aldrich Ames pleads guilty to giving U.S. secrets to the Soviet Union and later Russia. 1996 – Whitewater controversy: President Bill Clinton gives a 4 hour videotaped testimony for the defense. 1996 – Port Arthur massacre, Tasmania: A gunman, Martin Bryant, opens fire at the Broad Arrow Cafe in Port Arthur, Tasmania, killing 35 people and wounding 23 others. 2004 – CBS News released evidence of the Abu Ghraib torture and prisoner abuse. The photographs show rape and abuse from the American troops over Iraqi detainees. Births Pre-1600 AD 32 – Otho, Roman emperor (d. 69 AD) 1402 – Nezahualcoyotl, Acolhuan philosopher, warrior, poet and ruler (d. 1472) 1442 – Edward IV, king of England (d. 1483) 1545 – Yi Sun-sin, Korean commander (d. 1598) 1573 – Charles de Valois, Duke of Angoulême, son of Charles IX (d. 1650) 1601–1900 1604 – Joris Jansen Rapelje, Dutch settler in colonial North America (d. 1662) 1623 – Wilhelmus Beekman, Dutch politician (d. 1707) 1630 – Charles Cotton, English poet and author (d. 1687) 1676 – Frederick I, prince consort and king of Sweden (d. 1751) 1715 – Franz Sparry, Austrian composer and educator (d. 1767) 1758 – James Monroe, American soldier, lawyer, and politician, 5th President of the