Boston Terror Attack and Lockdown: A Timeline

Boston Terror Attack and Lockdown: A Timeline

Boston Residents Evacuate Apartments

Residents are evacuated as FBI agents search homes for the Boston Marathon bombing suspects in Watertown, Massachusetts April 19, 2013. Police on Friday killed one suspect in the Boston Marathon bombing during a shootout and mounted a house-to-house search for a second man in the suburb of Watertown after a bloody night of shooting and explosions in the city's streets.

REUTERS/Brian Snyder