puzzle when something like this happens, without getting too in depth, how does this get coordinated, mikele? and we know that the fbi takes the lead. but who sort of has sort of oversight and looks at all that information and puts it together and tries to get a cohesive answer out of it? >> you're absolutely right. it is an enormous challenge. what you will have is fundamentally two major centers of effort, all led by the fbi. in boston, you'll have the fbi-led joint terrorism task force, which brings in information from across the federal government and will work very, very closely with the boston police, the massachusetts state police and others. that will then feed into the effort here in washington, which will, again, be led by the fbi as the principal federal organization. they will pull in information from across the federal government. so, they will turn to the central intelligence agency for information, from overseas. they will turn to the department of defense to see if they have information. and so on and so on. that information will end up at the fbi in washington, in conjuncti