Milestones
Ten years ago: Soviet leader Mikhail S. Gorbachev set foot on American soil for the first time, arriving for a Washington summit with President Reagan. Forty-three people died in the crash of a Pacific Southwest Airlines jetliner in California after a gunman apparently opened fire on a passenger and the two pilots.
Five years ago: The Supreme Court rejected a challenge to a Mississippi abortion law that required women to get counseling and then wait 24 hours before an abortion.
One year ago: The space shuttle Columbia landed at the Kennedy Space Center, ending a nearly 18-day mission marred by a jammed hatch that prevented two planned spacewalks.