the board we are afghanistan, the land of the taliban and al qaeda. he denies this. >> it seems like he's involved with military action, guerrilla action out there. >> reporter: he actually joins militants on a mission targeting u.s. troops in afghanistan. >> we've almost called it the forrest gump of the jihad in the sense that he seems to find this way to get himself involved in operations or attacks that seem way beyond a 20-some-odd convert from long island should be involved in. >> reporter: he was resourceful and persistent. brian made a number of zigs and zags between taliban militants here in pakistan. he even volunteered to become a suicide bomber. but what he really wanted to do was connect with al qaeda. he was determined. he disguised himself as a woman dressed in a burqa and set off alone to find the al qaeda