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LIVE VIDEO: Public memorial service held for slain MIT officer (NOW)

Vice President Joe Biden attends the memorial service for MIT police officer Sean Collier, whom authorities say was killed in a confrontation with the Boston Marathon bombing suspects.
/ Source: ED Show

Vice President Joe Biden attends the memorial service for MIT police officer Sean Collier, whom authorities say was killed in a confrontation with the Boston Marathon bombing suspects.


LIVE VIDEO — Vice President Joe Biden attends the memorial service for MIT police officer Sean Collier, whom authorities say was killed in a confrontation with the Boston Marathon bombing suspects.