FCI Williamsburg is a medium-security federal prison for men in Salters, South Carolina, roughly 90 miles southeast of the state capital, Columbia. It was activated in 1994, built on a campus of more than half a million square feet that includes housing units, a special housing unit, administrative buildings, athletic space, and a firing range, constructed by Hensel Phelps with HOK as the architect. The main institution has a capacity of well over a thousand inmates, and it also has an adjacent minimum-security satellite camp for a smaller number of lower-security offenders, so families need to pay attention to which part of the facility their loved one is housed in. The prison has had a few notable moments over the years, including escape attempts from the minimum-security camp in 2010 and 2013, and in 2010 a staff member there was recognized by the U.S. Attorney General for an unusual achievement: engineering a more water-efficient way to cool the facility's ice machines that saved millions of gallons of water annually. Williamsburg is a fairly typical example of the medium-security prisons the Bureau of Prisons built across the rural South in the 1990s.