The field of corrections offers a wide range of employment opportunities for individuals looking to work in the criminal justice system. Some of the positions, such as correctional officer, warden, probation officer, and parole officer, are unique to the discipline of corrections. Other options, however, are positions that are found in the free community but catered to fit the needs of offenders in the correctional system. For example, there are prison physicians (sometimes called medical officers), nurses, dentists (often referred to as dental officers), dental hygienists, chaplains, counselors, psychologists, and psychiatrists.