One Year Since The Boston Marathon Bombing

BOSTON - APRIL 15: Mayor Martin J. Walsh, right, participated in a wreath laying ceremony in front of the Forum Restaurant, one of the two bombing sites, in Copley Square to commemorate the one year anniversary of the Boston Marathon bombings, Tuesday, April 15, 2014. The sister and brother of Martin Richard, Henry Martin, left, and Jane Martin, right, placed a wreath on a stand in front of the Forum Restaurant. One year ago, April 15, 2013, two homemade explosive devices killed three and injured more than 250 near the finish line of the race. (Photo by Wendy Maeda/The Boston Globe via Getty Images)