concern especially when they are linked to juvenile delinquency or criminal behavior committed by minors. More than 1.1 million youths are arrested annually for crimes ranging in seriousness from loitering to murder. Though most juvenile law violations are minor, some young offenders are extremely dangerous and violent. About 800,000 youths belong to more than 20,000 gangs in the United States. Youths involved in multiple serious criminal acts referred to as lifestyle, repeat, or chronic delinquent offenders