5 DAYS: Manhunt for the Boston bombers
Ten seconds and 100 yards. The time and distance between two bombs.
Two crudely built bombs set off 10 seconds and 100 yards apart without warning or threat, ripping through a crowd of spectators and runners, filling the street with fire, blood and limbs. Two bombs that began a cascade of casualties and terror, that triggered a massive manhunt that paralyzed a city.
It began Monday with two bombs 10 seconds and 100 yards apart just shy of the finish line of the BostonMarathon, blasts that sounded the start of a new race — to identify and find those responsible. This is how that race unfolded.