. >> kwhie, because in mississippi you sound like a stranger? that's so weird. >> possibly sound like a stranger, also nobody wants to talk about guns. they always think i'm there to get them in trouble. >> it was a lot of shoe leather, and ruvin still didn't have a solid link to katrina. >> it would take some persuading for me to have people even talk to me. >> but slowly the persuasion paid off. >> and each would tell us, yeah, i had it for a year and i pawned it at this pawn shop. >> after interviewing six former owners of the gun, ruvin arrived at a pawn shop that bought and sold it sometime around in 2003. >> the owner said we kept our records in diaper boxes in the back of the shed and the rats were eating on them, so we decided to just send them to the atf. >> ruvin offered to come look through the diaper boxes. the response from the atf, thanks but no thanks. >> the atf agent was saying, let us take care of it. so we left with nothing. >> ruvin left wondering if he had hit a dead and. it was late june, now more than a year when eric was