at columbus circle right near central park. nypd reviewing footage from these multiple locations. in an investigation like this, how important is that in ? >> that's key. all video is coming down to being the key to any investigation right now, especially in a city like new york city, downtown manhattan area, there's cameras on every single intersection, security cameras set up on different businesses around that area so they're going through each one of those and i'm sure already at this point in time, we see that a manhunt, so-called manhunt is going on in new york and that's probably the jttf out there trying to either -- >> the joint terrorism task force. >> out there looking for this individual that delivered the package to try to figure out who gave him the package to deliver to time warner center. >> so, and bob, let me bring back the question from earlier. these bombs did not explode. that could be sloppy bomb making, it could be intentional. what do you think about all