FCI Terre Haute is the medium-security institution within the larger Terre Haute federal correctional complex in Vigo County, Indiana. The government acquired the farmland for the site in 1938, and the original penitentiary opened here in 1940 — making this one of the older continuously operating federal prison sites in the country, even though its role and classification have shifted as the complex grew around it. A minimum-security satellite camp was added in 1960, originally intended to house nonviolent offenders who performed farm and maintenance work for the institution. Today, FCI Terre Haute is also known for housing a Communications Management Unit (CMU), a specialized, more restrictive unit used for a small number of inmates whose communications with the outside world are subject to heightened monitoring — one of only a couple such units in the entire federal system. So while it shares an address with its higher-security neighbor, USP Terre Haute, FCI Terre Haute functions as a distinct, generally less restrictive institution, aside from the CMU population held within it.