
Service at MIT for officer Sean Collier

Massachusetts State Police officers saluted during the memorial service for MIT Police Officer Sean Collier.
Bill Greene/Globe Staff
| April 24, 2013

Honor guards were in attendance during the memorial service at Briggs Field in Cambridge.
Wendy Maeda/Globe Staff
| April 24, 2013

New York Police Officer Kerry Market was one of thousands who attended the memorial service.
Wendy Maeda/Globe Staff
| April 24, 2013

A student from MIT had a quiet moment outside Briggs Field.
Wendy Maeda/Globe Staff
| April 24, 2013

Vice President Joseph Biden delivered emotional remarks at the service.
Reuters
| April 24, 2013

Thousands of police officers attended the memorial.
Bill Greene/Globe Staff
| April 24, 2013

Senator Elizabeth Warren (left) looked on as Biden spoke at the service.
Bill Greene/Globe Staff
| April 24, 2013

Sean Collier's brothers spoke at the memorial service.
Bill Greene/Globe Staff
| April 24, 2013

A hearse bearing left Briggs Field after the service.
Wendy Maeda/Globe Staff
| April 24, 2013

A Lexington police officer took a picture before the memorial service.
Bill Greene/Globe Staff
| April 24, 2013

Police filed into the memorial service for MIT Police Officer Sean Collier at Briggs Field on the MIT campus.
Bill Greene/Globe Staff
| April 24, 2013

People filed into Briggs Field for the service.
Bill Greene/Globe Staff
| April 24, 2013

Collier, 27, was murdered last Thursday as a wave of violence that began with the Boston Marathon bombings.
Bill Greene/Globe Staff
| April 24, 2013

More than 10,000 people attended the event.
Bill Greene/Globe Staff
| April 24, 2013

Mourners arrived for the service in front of thousands of police officers.
Bill Greene/Globe Staff
| April 24, 2013

Police officers arrived by the thousands to the memorial service.
Elise Amendola/Associated PRess
| April 24, 2013

Members of the MIT community arrived for the service.
BRIAN SNYDER/Reuters
| April 24, 2013

Police officers took their seats before the service began.
BRIAN SNYDER/Reuters
| April 24, 2013

Police officers lined up outside Briggs Field at MIT before the memorial service for Collier.
Jonathon Wiggs/Globe Staff
| April 24, 2013

James Taylor warmed up before the memorial service.
Bill Greene/Globe Staff
| April 24, 2013