You might have other, less plausible, ideas, but to me that's what appears to be going on at the conservative think tank, whose grounds have been obscured by ominous, barbed-wire-topped fencing for the past couple of weeks.

Since the photos below were taken, Heritage's Liberty Bell logo has been removed from the building's entrance and it appears that the forces behind this are now digging some sort of moat.

Given the organization's repeatedly-professed fondness for the prison camp in question, it's no surprise if they're remodeling to better approximate Gitmo (where "detainee procedures exceed the requirements of the U.S. Constitution, U.S. law, and customary international law.")