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A photograph of Boston University student Lingzi Lu, who was killed in the Boston Marathon explosions, sits on a table as a student writes a message on a board outside the school's Marsh Chapel before a vigil, Wednesday, April 17, 2013, in Boston. The city continues to cope following Monday's explosions near the finish line of the marathon, which claimed three lives. (AP Photo/Julio Cortez)

Boston deals with aftermath

Two bomb explosions killed three and injured more than 140 at the Boston Marathon, April 15. The bombs left a city forever changed, and people putting the pieces back together after the brutal chapter comes to a close.