More Notable Events on September 12: 1994 Cessna crashes in White House front yard 1984 New York Met Dwight Goodin sets rookie strike out record at 251 1970 1st Concorde lands at Heathrow airport 1953 Senator John F. Kennedy, 36, marries Jacqueline Bouvier, 24 1944 U.S. Army troops entered Germany for 1st time