Ten years ago
The Bush administration, concerned that a wave of attacks overseas could spread to the United States, raised the terrorism alert level to orange. The United States banned all beef imports from Canada after a lone case of mad cow disease was discovered in the heart of Canada’s cattle country.
Five years ago
Sen. Edward Kennedy was diagnosed with a cancerous brain tumor; some experts gave the Massachusetts Democrat less than a year to live. (Kennedy died in August 2009.) Hillary Rodham Clinton defeated Barack Obama in the Kentucky Democratic primary, while Obama won in Oregon. President Jimmy Carter’s White House chief of staff, Hamilton Jordan, died in Atlanta at age 63. Olympic gold medal figure skater Kristi Yamaguchi and her professional dance partner, Mark Ballas, won ABC’s “Dancing with the Stars.”
One year ago
A two-day NATO summit hosted by President Barack Obama opened in Chicago; the allies declared the end of the long and unpopular Afghanistan war was in sight even as they struggled to hold their fighting force together in the face of dwindling patience and shaky unity. Thousands of protesters marched through downtown Chicago, airing grievances about war, climate change and a wide range of other complaints. Abdel Baset al-Megrahi , 60, the only man convicted in connection with the bombing of Pan Am Flight 103 in 1988, died in Tripoli, Libya. Robin Gibb, 62, who along with his brothers Maurice and Barry, defined the disco era as part of the Bee Gees, died in London.