Pictures of funeral, memorial for slain MIT police officer Sean Collier

<div class="meta image-caption"><div class="origin-logo origin-image none"><span>none</span></div><span class="caption-text">Pictured: The memorial service for slain MIT police officer Sean Collier, held at Briggs Field on the campus of the Massachusetts Institute of Technology on April 24, 2013.  Collier was allegedly killed by Boston Marathon bombing suspects Tamerlan and Dzhokhar Tsarnaev.</span></div>
April 24, 2013 10:15:57 AM PDT