Collier is from Somerville, Mass. and joined the MIT Police after working as a civilian employee at the Somerville Police Department.
Police chief John DiFava said of Collier: "In a very short period of time, it was remarkable how engaged he was with students, particularly graduate students." Collier had also participated in the MIT Outing Club, hiking and skiing with students.
Collier was a native of Wilmington, Mass.
Update: The Boston Globe's David Abel spoke with Collier's roommate:
Through tears, MIT pd Collier's roommate said: "He was the nicest person." Have lived together for two years.— David Abel (@davabel) April 19, 2013
A Tumblr is dedicated to memories of Collier.
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