Milestones

Ten years ago: Lt. Col. Oliver North told the Iran-Contra committees that the late CIA Director William J. Casey had embraced a fund created by arms sales to Iran because it could be used for secret operations other than supplying the Nicaraguan Contras.

Five years ago: A federal judge in Miami sentenced former Panamanian leader Manuel Noriega, convicted of drug and racketeering charges, to 40 years in prison. A New York jury found Pan Am responsible for allowing a terrorist bomb to destroy Flight 103 in 1988, killing 270 people.

One year ago: Ross Perot said he would make a second run for president if nominated by the Reform Party, pitting himself against former Colorado Gov. Richard Lamm, who announced his candidacy the day before.