FILE - A plume of smoke rises from an explosion near the finish line of the 2013 Boston Marathon in Boston on Monday, April 15, 2013. (AP Photo/The Boston Globe, David L Ryan) MANDATORY CREDIT: THE ... more 
FILE - A plume of smoke rises from an explosion near the finish line of the 2013 Boston Marathon in Boston on Monday, April 15, 2013. (AP Photo/The Boston Globe, David L Ryan) MANDATORY CREDIT: THE BOSTON GLOBE, DAVID L RYAN less 
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Associated Press | Photo By The Boston Globe, David L Ryan
Sun, Apr 21, 2013 10:52 AM EDT