sounds, there was a person walking around in an area where security is at its highest, and he is not paid attention to for in excess of seven hours. >> at 10:00 p.m., after waiting at baggage claim for several hours by herself, robert's mother leaves, told by airport officials, she says, that there's no record of her son arriving. >> and she said, no, he's not here. you can go home. we will phone you. >> at 12:15 a.m., nine hours after arriving at the airport, robert finally makes it through immigration and is free to leave. he exits the international reception lounge, a secure area blocked off with plexiglas, but then returns through the one-way automatic doors. >> and i think when he got out into that public area and he realized that there was no one there, he got confused as to whether he was in the right place.