Killed: MIT Police Officer Sean Collier, 26 (above).
Critically injured: MBTA Officer Richard Donahue, 33 (above).
Residence where suspect #2, Dzhokhar Tsarnaev, 19, was located in boat (at left).
BZ
Killed: MIT Police Officer Sean Collier, 26 (above).
Critically injured: MBTA Officer Richard Donahue, 33 (above).
Residence where suspect #2, Dzhokhar Tsarnaev, 19, was located in boat (at left).
BZ