Milestones

Ten years ago: President Reagan’s advisory commission on AIDS was left seemingly in disarray as its chairman, Dr. W. Eugene Mayberry, and its vice chairman, Dr. Woodrow A. Myers Jr., resigned.

Five years ago: Trade representatives of the United States, Canada and Mexico initialed the North American Free Trade Agreement during a ceremony in San Antonio, Texas.

One year ago: The effects of a Canadian Auto Workers strike against General Motors spread across the border as 1,850 workers were laid off at two U.S. parts plants. The Irish Republican Army detonated two car bombs inside the British army’s headquarters in Northern Ireland, wounding 31 people.