In Missouri, juvenile detention and delinquency services are organized at both the state and local level. Detention is primarily administered by local judicial agencies in regional districts. Deputy Juvenile Officers, hired and supervised by the Presiding Circuit Judge, supervise youth on probation. In most counties, Deputy Juvenile Officers are employees of the State Judicial Branch, but in the state's 10 largest counties, they are county employees. The Department of Youth Services, a state executive social services agency, administers commitment to state facilities and aftercare services.