Performs administrative duties in law enforcement, planning, and operations including preparing and presenting court testimony; training; maintaining associated case files; preparing and completing forms, narrative reports, and correspondence; appears in court as witness to give testimony in court concerning investigation results and evidence obtained. Patrols and responds to a variety of criminal activities requiring law enforcement, intervention such as homicides, sexual assaults, robberies, property crimes, domestic violence, vice and narcotics related activities, crimes by and against juveniles, and other crimes; evaluates situation and determines the most appropriate course of action.