Facility Protection: Implications of the Navy Yard Shooting on Homeland Security

The events that took place on September 16, 2013 at the Washington Navy Yard were shocking and tragic. Twelve innocent lives were lost that day, along with several injured. While much of the security of this horrific event will rightly focus on how someone in Aaron Alexis' mental state was able to pass a Governmental background investigation and to hold a security clearance, today's hearing will concentrate on the physical preventative security measures that are currently in place for Federal facilities. How do we control access to these facilities to protect both employees and public visitors? What physical security measures, if any, can be taken to prevent future tragedies?