On the southbound lane of the Baltimore-Washington Parkway, traffic is stalled as commuters crowd down a special restricted exit that disappears into the thick woods. Beyond, hidden from view and protected by electrified fences and heavily armed guards, is the largest, most secret and most technologically advanced intelligence agency in the world: the National Security Agency, NSA.
Most experts agree that, to ensure another 9/11 doesn’t slip through the cracks, we need to monitor potential terrorists and share information between agencies. But as author James Bamford asks, could too much information end up making the world more dangerous?
Watch “The Spy Factory” on PBS
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This show will probably not be available outside the USA because of rights restrictions on it's content.
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