look at here where might these have been sent from, is there any sort of information that might help with that, whether it be the postmarking, any sort of details. i and would expect here we'd learn there's some video canvassing occurring. that's a police term. they're going to go around to certain places they think maybe these packages came from. is there surveillance video of the closed circuit tvs that would have an image. >> that's how they figured out the boston bomber. most you've talked to and i've talked have expressed a great deal of confidence they're going to figure out who's behind this. >> a lot of people mention the unabomber because there's similarities of moving packages through the mail, it took extraordinary steps to drive packages to different locations, to hand deliver some of them himself. he took on a whole different way of delivering these packages, and that was in a different time