TERROR IN BOSTONA COUPLE HOURS AFTER THE WINNERS OF THE 2013 BOSTON MARATHON CROSSED THE TAPE TO FINISH THE RACE, A BOMB EXPLODED JUST A FEW YARDS FROM THE FINISH LINE, AND 12 SECONDS LATER, A SECOND BOMB DETONATED A FEW HUNDRED FEET UP THE COURSE ON BOY

As smoke fills Boylston Street, a runner reaches the finish line and police begin to react moments after a bombing at the finish line of the 2013 Boston Marathon.