Are We Any Safer? (Part Three)

Here is the third installment of the Washington Post's series "Top Secret America." This one describes how the Washington suburb of Fort Meade, Maryland has become the largest of several geographical centers for the United States intelligence community. The National Security Agency is a huge presence there, as are private companies such as Northrop Grumman and General Dynamics that support the NSA. If you're smart, good at mathematics, and have a high security clearance, it might be a promising place to look for work.