abaaoud shot. >> it's clear for some of the group, cameras as much weapons of terror as guns themselves. what other piece of information came out terrorist as peered to do some scouting of the site they attacked. they cased these sites. people say if they were there, maybe there should have been signs, should have been ways to catch them beforehand. but it's in the that simple, is it? >> certainly not. i mean these people, one of their capabilities is to blend in perhaps as a tourist or regular citizen on the street, on their way to work. they're discretely filming but looking for ingress and egress points. they're looking at security that might be available. they may be looking to see where cameras are placed. so they're doing their reconnaissance in advance when they approach to attack they can be more tactical, much more strategic. ha regardless these are the things we need to look for in the united states. some of the anomalous behavior, if you see somebody asking