CNN EarlyStart April 16, 2013 10:34:00
Why? we're not sure. we believe that they went out. they left with bags of evidence. could be a couple of reasons for that. one, specific information that they may have gotten from a man who is in the hospital right now. no word as to his definite connection to the event. also, they could be looking for trace materials from explosions. bombs tell a story. and how they go off, how they're made, and what they're made of. they show us windows into the sophistication of who could have done something like this. and what was needed to do it that we can trace to any type of desire and process of acqu...