Emma MacDonald, 21, center, cries during a vigil for the victims of the Boston Marathon explosions at Boston Common, Tuesday, April 16, 2013. Twin explosions near the marathon’s finish line Monday ... more 
Emma MacDonald, 21, center, cries during a vigil for the victims of the Boston Marathon explosions at Boston Common, Tuesday, April 16, 2013. Twin explosions near the marathon’s finish line Monday killed three people, wounded more than 170 and reawakened fears of terrorism. (AP Photo/Julio Cortez) less 
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Associated Press | Photo By Julio Cortez
Tue, Apr 16, 2013 7:53 PM EDT