so brandon mayfield didn't have a passport.s an army veteran and having been out of this country and he didn't have a passport. they are thinking how could you got to madrid if he did have a passport? he must've had a fake passport. they submit an affidavit to the judging who want to arrest him as a material witness to find out what is going on because we don't think we're probable cause to charge him with a crime. one of the reasons that we're telling you that we suspect him is there's a likelihood that he is a phony passport. >> host: just to get the context, there is a lot of racing backwards here, you're right, that brandon mayfield is not just some lawyer sitting in oregon. he is a lawyer known to the fbi and the justice department, he had defended one of 9/11's defendants guess that he represented one of the people in oregon. to represent him in a child custody case. >> host: and jeffrey battle is -- >> guest: he ended up being charged with a terrorism crime. >> host: so it was within at least the universe. >> guest: that

the fbi agent making the connection and you can see how those mistakes happened but it helped brandon mayfield. >> guest: two things. when the fbi identified the fingerprints they said its low. when you should be doing and what the fbi is doing now after hundreds of pages of the general reports is a second person who doesn't know the first person made the identification to that independently but that didn't happen. the people all assumed the identification was right when they told the spaniards they said we don't think so and nobody paid attention. they never asked what the basis of their conclusion was so that was one problem. >> host: just to give an idea, we have a sense in the public that forensic science has been around for a century is a precise science. it is precise in the sense that each of our fingerprints is unique and matching it is unique however the match is anything but science. it depends on how many points you compare it to and how similar they are in terms of the match that's why the physical comparison comes to play where there's not a perfect match. >> guest: of course is a

there for brandon mayfield didn't get a passport, he was an army veteran and he didn't have a passport so they are thinking how could he have gotten too moderate if he didn't have a passport? he must have a fake passport. so the submit an affidavit saying we want to arrest him as a material witness to find out what is going on because we don't think we have probable cause to charge him with a crime and one of the reasons that we are telling you that we suspect him as a likelihood that he had a phony passport. >> host: just to give the context there is a lot of reasoning backwards that you're absolutely right with brinton the field is left as a lawyer sitting in oregon he is a.m. to become a lawyer known to the fbi and the justice department as only for legitimate reasons he had defended one of the 9/11 defendants'. >> guest: he represented jeffrey in a child custody case. it's suspicious to represent somebody in a child custody case. >> host: and he is -- >> guest: a gentleman and oregon who ended up charge for the terrorism crime. >> host: at least within the universe. >> guest: that'