The Google map view clearly tells you that it is the Secret Service training center. Lots has been written about it; it is where they do training for protectio

The Google map view clearly tells you that it is the Secret Service training center. Lots has been written about it; it is where they do training for protection details. http://www.secretservice.gov/about_rtc.shtml http://www.secretservice.gov/about_rtc.shtml The truck in the picture is a vacuum truck. Nothing odd about it, I see them in pretty much every city. They unclog pipes and remove material from dig sites.