Members of the Cambridge Police Department walk in a procession into a memorial service for slain Massachusetts Institute of Technology police officer Sean Collier on campus in Cambridge April 18, ... more 
Members of the Cambridge Police Department walk in a procession into a memorial service for slain Massachusetts Institute of Technology police officer Sean Collier on campus in Cambridge April 18, 2014. Collier, who authorities say was shot dead by the two men accused of orchestrating last year's Boston Marathon bombing, which killed three people and injured 264. REUTERS/Gretchen Ertl (UNITED STATES - Tags: SPORT ATHLETICS CRIME LAW) less 
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Reuters | Photo By Gretchen Ertl / REUTERS
Fri, Apr 18, 2014 12:23 PM EDT