The Federal Bureau of Prisons classifies prisons into several categories: * United States Penitentiaries * Federal Correctional Institutions * Private Correctional Institutions * Federal Prison Camps * Administrative Facilities * Federal Correctional Complexes This list does not include military prisons, state prisons, jails, or prisons operated under contract with local governments. It also does not include detention centers and facilities and processing centers run by Immigration and Customs Enforcement (ICE).