Imagine, for a moment, a hypothetical terrorist, disguised as a stockbroker or perhaps a bike messenger, biding his time at an Internet cafe in downtown San Francisco. He orders a cup of coffee, plugs in his laptop computer, and connects to his home page. Three thousand miles away, at Fort George G. Meade in Maryland, an audio speaker bleeps at the computer station of the National Security Agency intelligence analyst assigned to spy on this particular terrorist -- a U.S. citizen -- as he trades e-mail with his cell members and roams cyberspace looking for advice on... More >>>