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9/11 terrorist attacks on New York and Washington

"Undercover" History Channel documentary on signals intelligence before and after 9/11 >>>

Echelon Part 1 (Video clip)

Echelon Part 2 (Video clip)

Echelon Part 3 (Video clip)

Echelon Part 4 (Video clip)

Echelon Part 5 (Video clip)

 

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GCHQ: The Uncensored Story of Britain's Most Secret Intelligence Agency