0 >> well, bill, don't forget the fbi does release photos of wanted criminals. the fbi's 10 most wanted is out there. people they want to go after. the public has been very helpful. over 30% of people found on the fbi's 10 most wanted list came from the public. i don't think we have many cases of people going after 10 most wanted individually to go harm them. >> bill: but you know, bill, this is terrorism. this is raw. this is emotional. this is, you know, three days ago. you know, the fbi's most wanted list is vetted. it's a carefully thought out process. i'm sure this was carefully thought out as well. i have never seen anything like this. you have? >> no. certainly. >> bill: unprecedented? >> unprecedented. i am confident that they are saying they are looking for these people and these are the only two people, bill, in this press conference they mentioned who are out there who they want people to look for is that they are confident that they have something else showing that they have these people in that place, putting the package or packages down and these are the people they are going after. >> bill: now, whoever these guys are, they obviously know how to blend into a crowd. hat on backwards. backpacks, you know, just like everybody in boston. you know, right there, this, and that. these aren't amateurs. >> well, these are people probably who have learned. they have tud deed. i believe they kind of have looked to see how other crimes have been committed. and they have not only just learned that trade craft, how to build these devices but they have also learned how to blend. in you see them, they look as though they are just going to watch the marathon. they look kind of athletic kind of casual look. >> bill: right. >> big thing here we now have people out there taking pictures, the videos out there who are now going to go home and look a i think i have these guys on another picture. >> bill: i moip we do. they know what they are doing they really don't. security cameras are everywhere they obviously didn't anticipate that you can see them very very well. we appreciate you coming in on quick notice. thank you very much. next on the rundown, we the first technology of its kind... mom and dad, i have great news. is now providing answers families need. siemens. answers.