Thousands of mourners -- including MIT students, faculty and staff, and law enforcement officials from across the nation -- have paid their respects to a campus police officer who authorities say was ambushed in his cruiser by the Boston Marathon bombers.
Funerals have been held today for the youngest of the Boston Marathon bomb victims, and for the college police officer who authorities say was shot and killed by the suspects a few days later.
Vice President Joe Biden will travel to Cambridge, Mass., on Wednesday to attend the memorial service for the MIT police officer killed in the aftermath of the Boston Marathon bombing.