the laura: with the second suspect under arrest in friday's london subway bombings, experts in the attack that injured 29 people is looking like it may be the result of a coordinated plot or the british government in the meantime lowering its terror threat levels from critical to severe. that's burning dana hoffman, former cia officer. thank you for being here today and lending your perspective because it is important. we want to ask you first the lowering of the terror threat from critical to severe tell you? you sound significant but it doesn't mean it's over what this particular case and others. >> right. i don't think the worries are over at all. we are in the response phase of the counterterrorism operation which is never a place i wanted to find myself when i was serving cia because of and we had failed to collect the intelligence which would've allowed us to preempt or prevent the attack in the first place. i'm sure that scotland yard, british authorities doing all they can on the forensic side to