3 days
(Note: Image included at link is not from tape)
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Al Qaeda Tapes Prompt FBI Warning
Oct. 10, 2002
The FBI is warning state and local authorities that recent taped statements by al Qaeda leaders may signal that another attack on the United States has been approved.
CBS News National Security Correspondent David Martin reports al Qaeda has a track record of releasing statements by its leaders just before major attacks like the Africa embassy bombings in 1998.
http://www.cbsnews.com/stories/2002/10/09/...ain525008.shtml