Marathon bombing anniversary wreath laying

Cardinal Sean O’Malley, Boston Mayor Martin J. Walsh and Massachusetts Gov. Deval Patrick, join the families of those killed in the 2013 Boston Marathon bombings for a prayer, wreath laying and moment of silence at the site of the second explosion on Boylston Street in Boston, April 15, the first anniversary of the attack. (Pilot photos/ Gregory L. Tracy)

Cardinal Seán P. O'Malley speaks to the family of Boston Marathon bombing victim Martin Richard following a wreath-laying at the site of the first explosion, April 14, 2014, the first anniversary of the attack. (Pilot photo/ Gregory L. Tracy)

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Cardinal Seán P. O'Malley speaks to the family of Boston Marathon bombing victim Martin Richard following a wreath-laying at the site of the first explosion, April 14, 2014, the first anniversary of the attack. (Pilot photo/ Gregory L. Tracy)