because bob mathews made a huge mistake. >> during the armored truck robberies, matthews was when weun, it took about a week to trace it. we discovered that it had been originally purchased by andrew barnhill in montana. >> ultimately we traced him to an address in lacleed, idaho. we went inside that residence and found lots of information. >> they found automatic weapons, large quantity of cash, receipts, i.d.s and other information that tied him in to the order. >> we also found a milk carton. the milk carton had some personal items. and buried down in the bottom is an article on the north gate bank robbery. why do you keep one article on one thing like that in a place where your most personal possessions are located? because you had something to do with it. at this point i feel like we've got enough. let's expand our case. but i've got to wait for the justice department to say, okay. now, i sent my report off in june. now we're in july. and i sat and i waited until they finally came back, and they said, yes, it's a go. now the case was about to greatly expand once we had this auth