Washington Photo Blog: Friday, Sept. 21, 2007

Security personnel outside the National Threat Operations Center at the National Security Agency during a presidential visit to Fort Meade, Maryland, September 19, 2007.
Brooks Kraft / Corbis for TIME

Gatekeeper

Security personnel outside the National Threat Operations Center at the National Security Agency during a presidential visit to Fort Meade, Maryland, September 19, 2007.

The Washington photo blog is an intimate look at life inside the Beltway and beyond.