1 / 10
Members of a police honor guard, front, lead a column of law enforcement officials into a memorial service for fallen Massachusetts Institute of Technology police officer Sean Collier, in Cambridge, Mass., Wednesday, April 24, 2013. Collier was fatally shot on the MIT campus Thursday, April 18, 2013. Authorities allege that the Boston Marathon bombing suspects were responsible. (AP Photo/Steven Senne)

Slain MIT officer honored

Fallen campus police Officer Sean Collier, 27, was honored at a memorial

service at MIT’s Briggs Field in Cambridge. Thousands of Massachusetts

Institute of Technology students, faculty, and staff, as well as law

enforcement officials from across the nation attended the funeral.