In this frame grab from Saturday, April 20, 2013, video, Massachusetts General Hospital nurse Adam Barrett talks about the horrific early hours as bloody patients poured in after the explosions at the... more 
In this frame grab from Saturday, April 20, 2013, video, Massachusetts General Hospital nurse Adam Barrett talks about the horrific early hours as bloody patients poured in after the explosions at the Boston Marathon. (AP Photo/Carla K. Johnson) less 
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Associated Press | Photo By Carla K. Johnson
Sun, Apr 21, 2013 4:16 PM EDT