text:  A voice on the video says in Arabic, I am transmitting these scenes to you from the heart of the American capital, Washington. This video, unsealed in federal court this week and obtained by 60 Minutes, was recorded in the summer of 1999. The man behind the camera is Omar al-Bayoumi, who the FBI says was an operative of the Saudi intelligence service with close ties to two of the 9-11 hijackers.