A Massachusetts Institute of Technology employee, Deb Shafran (L), hugs fellow employee Jennifer Earls, near a makeshift memorial for slain MIT police officer Sean Collier on campus in Cambridge April... more 
A Massachusetts Institute of Technology employee, Deb Shafran (L), hugs fellow employee Jennifer Earls, near a makeshift memorial for slain MIT police officer Sean Collier on campus in Cambridge April 18, 2014. A memorial service was held on campus for 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 
1 / 30
Reuters | Photo By Gretchen Ertl / REUTERS
Fri, Apr 18, 2014 12:50 PM EDT