Looks like young white guys, no surprise there! What do you guys think? No doubt in my mind the backpacks they are carrying are not near heavy enough to have a crockpot full of explosives and nails?
http://www.cnn.com/video/?hpt=hp_t1#/video/us/2013/04/18/tsr-fbi-boston-marathon-bombing-update.cnn
http://www.cnn.com/video/?hpt=hp_t1#/video/us/2013/04/18/tsr-fbi-boston-marathon-bombing-update.cnn