there are striking new claims tonight about a plane crash that really hit the country hard. a 747, or the safest airliner on earth, blown out of the sky. one minute, everything aboard flight 800 was normal. the next, the plane falling into pieces off the coast of long island, new york, killing everyone on board. and prompting perhaps the most thorough investigation. investigators literally reassembled the aircraft to determine how it came apart. it still exists in a hangar in virginia. now the producers of a new documentary and some retired investigators say the official theory about blaming an explosion on the fuel tank is wrong. they claim in the words of the film's own material that the investigation was systematically undermined. today, they petitioned to reopen the investigation. in a moment, one of those retired investigators as well as