Potomac Direction News Today

>> he said, "mr. vice president, we have a plane coming down through pennsylvania, down the potomac direction. its a hijacked plane. we need your authorization tomai take it down." and he said, "is it a confirmed hijack?" and the officer said, "yes, sir, it is." and he just said, "okay, take it down." >> reporter: flight 93 was not shot down. it crashed after the passengers and crew fought back against the hijackers. norah. >> odonnell: incredible to hear all that history 20 years later. jeff pe...