9/11 hijackers smile, joke in 2000 video (AP)

LONDON - Mohamed Atta, the ringleader of the Sept. 11 terror attacks, smiles and jokes with another hijacker before the two turn serious and speak intently to a camera in a new video. For more than 30 minutes, the video obtained Sunday by AP Television News, shows Atta, who flew one of the planes that brought down New York's World Trade Center, and Ziad Jarrah, who piloted United Airlines flight 93, which crashed into a Pennsylvania field, sitting in front of a bare white wall, alternately alone ...