michael kors black Friday sale This is what we expect from war."Some 23,000 runners took part in the race, one of the world's oldest and most prestigious marathons.One of Boston's biggest annual events, the race winds up near Copley Square, not far from the landmark Prudential Center and the Boston Public Library. It is held on Patriots Day, which commemorates the first battles of the American Revolution, at Concord and Lexington in 1775.Boston Police Commissioner Edward Davis asked people to stay indoors or go back to their hotel rooms and avoid crowds as bomb squads methodically checked parcels and bags left along the race route. He said investigators didn't know whether the bombs were hidden in mailboxes or trash cans.The Federal Aviation Administration barred lowflying aircraft within 3.5 miles of the site."We still don't know who did this or why," Obama said at the White House, adding, "Make no mistake: We will get