REGULARLY PROVIDING DATA ON KNOWN SERIOUS OFFENDERS TO PATROL UNITS THROUGH A CRIME INFORMATION CENTER (CIC) PRODUCED INCREASED ARRESTS AMONG THOSE OFFENDERS AND HAS BEEN IMPLEMENTED BY THE DEPARTMENT. THE OTHER TWO APPROACHES WERE LOCATION-ORIENTED PATROL (LOP), SURVEILLANCE OF AREAS WITH NOTABLY HIGH CRIME RATES AND PERPETRATOR-ORIENTED PATROL (POP), SURVEILLANCE OF SELECTED GROUPS OF POTENTIAL CRIMINAL OFFENDERS. THE REPORT SHOWS THAT, ALTHOUGH LOCATION-ORIENTED PATROL BY THE DEPARTMENT'S TACTICAL UNIT APPEARED TO BE SOMEWHAT MORE EFFECTIVE THAN PERPETRATOR-ORIENTED PATROL, NEITHER REPRESENTED A SUBSTANTIAL IMPROVEMENT OVER THE MORE USUAL MIX OF TACTICAL UNIT ACTIVITIES. SINCE THE EXPERIMENTATION WITH THE THREE APPROACHES WAS COMPLETED, TACTICAL UNITS HAVE BEEN DECENTRALIZED TO DISTRICT PATROL STATIONS. (AUTHOR ABSTRACT MODIFIED)