Soldiers and airmen of the Massachusetts National Guard muster on the Boston Common to receive orders for a coordinated response in support of civilian authorities in the wake of the Boston Marathon ... more 
Soldiers and airmen of the Massachusetts National Guard muster on the Boston Common to receive orders for a coordinated response in support of civilian authorities in the wake of the Boston Marathon bombings, April 15, 2013. Some of the more than 400 Guardsmen on hand to keep portions of the route clear for runners were among the first to respond to the explosions in Boston. (U.S. Army photo by Cadet Matthew Feehan, Massachusetts National Guard Public Affairs, via Flickr) less 
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Flickr | Photo By Matthew Feehan/DVIDSHUB / Flickr
Tue, Apr 16, 2013 7:00 PM EDT