Ten years ago: First lady Nancy Reagan underwent a modified radical mastectomy at Bethesda Naval Hospital in Maryland.

Five years ago: Japanese exchange student Yoshi Hattori, 16, was shot and killed by Rodney Peairs in Center, La., after Hattori and his American host mistakenly knocked on Peairs’ door while looking for a Halloween party. (Peairs was acquitted of manslaughter, but in a civil trial was ordered to pay more than $650,000 in damages to Hattori’s family.)

One year ago: Russian President Boris Yeltsin fired security chief Alexander Lebed, one day after the former general was accused by a rival of building his own rogue army. The Atlanta Braves won the National League Championship Series, beating the St. Louis Cardinals.