then you've got almost some coordination going on between one or two or three individuals. i don't think that's going to happen. something like this, somebody's going to stay something. somebody knows that this is going on and knows who's doing it. >> the d.c. sniper was tracked down in part from witnesses, but also because he exchanged messages with police. in cases lick this, do attackers often if not want to be caught, they want it to be known that they're behind it to some degree, right? there's an ego factor to attacks like this often. >> yeah, there's a notoriety factor to this. that's what we saw in the d.c. sniper case. and i'm sure we're going to see the same thing here. it sounds like they've got -- in the d.c. sniper case, we had all hands on deck, law enforcement, every agency. of course, aulg the headquarters agencies are here. actually covered every intersection. every time there was a shooting, people rolled out of bed to