NSA Utah Data Center

The National Security Agency and the U.S. Army Corps of Engineers broke ground in January 2011 on a $1.2 billion data center at Camp W.G. Williams National Guard Post here. The massive, one million square-foot facility currently is the largest U.S. Department of Defense project in the nation.

It looks like the airfield is being demolished.

http://cryptome.org/dodi/nsa-utah-data-02.pdf
http://www.globalsecurity.org/military/facility/camp-wg-williams.htm
http://www.mytopo.com/maps/?lat=40.4274&lon=-111.9341&z=15