Between February 2011 and May 2012, BJS completed the third National Inmate Survey (NIS-3) in 233 state and federal prisons, 358 jails, and 15 special confinement facilities operated by Immigration and Customs Enforcement (ICE), the U.S. Military, and correctional authorities in Indian country. The survey, conducted by RTI International (Research Triangle Park, North Carolina), was administered to 92,449 inmates age 18 or older, including 38,251 inmates in state and federal prisons, 52,926 in jails, 573 in ICE facilities, 539 in military facilities, and 160 in Indian country jails.