This article describes one of the newest, most specialised law enforcement programmes in the United States: Crisis Intervention Teams (CITs) for youth with mental illness. In response to the fragmentation of behavioural healthcare services in the educational, juvenile justice and mental health systems, JuvenileCITs (J-CITs) have been implemented in a handful of jurisdictions to serve as an intervention for troubled and troublesome adolescents in need of mental health care. Information about J-CITs is limited; little has been written about such programmes, and no published studies have examined their effectiveness. Hence the present study was undertaken to identify all of the currently operational J-CITs in the United States. We conducted structured telephone interviews in order to gather qualitative data regarding the philosophy, origins, operations and components of each J-CIT. We afford an early look at several J-CIT programmes in diverse geographic areas. We conclude with observations concerning the role of such programmes in a law enforcement as well as the challenges that police departments are likely to face in the implementation and maintenance of such initiatives