MIT Police and local law enforcement honor MIT Officer Sean Collier, who was killed in the line of duty after the Boston Marathon Bombings ten years ago, Tuesday, April 18. Alex Tang–The Tech Apr. 27, 2023 Facebook Twitter Reddit Print MIT Police and local law enforcement honor MIT Officer Sean Collier, who was killed in the line of duty after the Boston Marathon Bombings ten years ago, Tuesday, April 18. Alex Tang–The Tech