From cnn: A hotel security camera video released by the U.S. government showed the explosion that followed the crash of American Airlines Flight 77 into the Pentagon on September 11, 2001, but the low-quality recording did not capture an image of the 757 jetliner.
The video, recorded by a security camera at the Doubletree Hotel in Arlington, was released to public interest group Judicial Watch and others who filed a lawsuit seeking the tape and other videos from that day.
CNN filed a Freedom of Information request for the video in February 2002, after the manager of the hotel disclosed its existence to CNN Senior Pentagon Correspondent Jamie McIntyre and said it had been confiscated by the FBI. CNN's FOI request was denied because at the time the tape was considered evidence in the investigation of Zacarias Moussaoui, who has since been convicted.
There was speculation that this video might show the American Airlines 757 jetliner before it crashed, but a close examination by CNN only revealed the subsequent explosion and no image of the jet. The only known record of the plane is on images from the Pentagon security camera, first broadcast by CNN in March of 2002, and officially released in their entirety May of this year.