A large American flag was raised behind the stage at the memorial by two firetruck ladders.

(Left to right) Albert (Gary Maitland), Robbie (Paul Brannigan), and Rhino (William Ruane) with policemen.

The MIT community joined law enforcement officials at the service.

Olga Kurylenko and Ben Affleck in To The Wonder.

Album cover art of Mosquito.

Members of the Irish American Police Officers Association of Massachusetts play on the bagpipes in honor of Sean Collier.

Cover art of Light for Visual Artist.

A shark nears Thor’s raft Kon-Tiki in the Pacific Ocean.

Pål Hagen plays Norwegian explorer Thor Heyerdahl in Kon-Tiki, a film about the 1947 expedition from South America to the Polynesian islands.

A Massachusetts State Police helicopter flies over Briggs Field as part of an honorary flyover after the memorial for MIT Police Officer Sean Collier.

The thousands of law enforcement officers present at fallen MIT police officer Sean Collier’s memorial were seated Wednesday morning before a majority of MIT community members arrived at Briggs Field.

(Left to right) Mo (Jasmin Riggins), Albert (Gary Maitland), Robbie (Paul Brannigan), and Rhino (William Ruane).

Vice President Joe Biden spoke at the memorial service on Wednesday. Other notable guest included Massachusetts Governor Deval Patrick, singer-songwriter James Taylor, and Massachusetts Senator Elizabeth Warren.

Rachel McAdams and Ben Affleck in To The Wonder.

Olga Kurylenko in To The Wonder.

More than 10,000 guests were in attendance at the memorial in Briggs Field.

Allison M. Schneider (left) confronts Chris D. Smith ’13 and Emily K. Lydic ‘14 in Dramashop’s dark comedy, No Exit.

Members of the MIT Dining staff take a short break during dinner.

Members of the MIT community eat dinner in the Simmons Dining Hall.