inspired by isis, as we've seen before in so many different attacks in the united states and, frankly, in europe. >> phil, in the last hour, former dni james clapper was saying the fact that this guy was taken alive is a potential trove of information and also could help understand, in kind of long term, what drives people in the radicalization process. >> it can, but step back and ask a fundamental question, where is this going to get us in the long term. we've been looking at this stuff for 16 years, and you ask the question, once we understand how this happens in a democratic society, he's radicalizing by looking at free speech material, he's looking at material online, and then he goes to rent a truck. and people are going to say, why can't you find somebody like that. we can study this all we want, and i'm not sure we're going to find answers that are satisfying. so when you look at the question what radicalized him and what's the value of an individual who stays alive after the attack, my answer is just where ali was. it's not the radicalization process. i want to know if he identifies people, places, nodes of