An overview discusses the outlook for law enforcement employment and the central characteristics of policing in the United States in the 1990's and the future. The following chapters discuss jobs at the city, county, State, and Federal levels and in the military with respect to selection requirements; probation, tenure, and promotion; and typical positions. Further chapters discuss compensation, fringe benefits, other incentives to employment, job frustrations, the element of danger, basic educational requirements, recruit training, career development, and inservice training. Related careers such as corrections and rehabilitation, criminalistics, polygraph operator, document examiner, fingerprint and firearms expert, laboratory technician, private security, loss prevention, and support services are also described. Charts; descriptions of national associations of criminal justice personnel; and appended reading lists, lists of job categories, and addresses of units of the Federal Bureau of Prisons