 In May 2010, the Army Human Resource Center of Excellence, the largest office building in the state at nearly opened at Fort Knox.The new complex employs nearly 4,300 soldiers and civilians.Kentucky contains two of the twenty U.S. Federal Penitentiaries – USP Big Sandy (in the east in Martin County near Inez) and USP McCreary (in the south in McCreary County in the Daniel Boone National Forest).