to proper screening a number of islamists who i think have been clearly the shield, the camouflage radical islam groups to take hold and prosper. so this is i think part of the concern that drove the bricks at process and why england wants to do things to solidify its own border. again, england is not a place where explosives or weapons are easily found or manufactured. this is something we have to focus on. >> martha: the video that you're seeing. were getting some new pictures, new video coming in, the latest language around this is that police are investigating this as a possible terror attack. they have now had a couple of hours on the scene, so one would imagine that they have identified an area where this explosion went off and that they've had a little bit of time to sort of obviously help the wounded in that area but also to get a good enough feel for the