Milestones

Ten years ago: The United States began its policy of escorting re-flagged Kuwaiti tankers up and down the Persian Gulf to protect them from possible attack by Iran.

Five years ago: Colombian drug lord Pablo Escobar escaped from his luxury prison near Medellin. He was killed by security forces in December 1993.

One year ago: Friends and families gathered on a Long Island, N.Y., beach for a tearful memorial service dedicated to the 230 victims of the crash of TWA Flight 800.