He worked eight years in the narcotics unit as an undercover officer.
Mr. Brown said he had planned to restore the narcotics units as the department grew.
Changes were made to the police department and to the narcotics unit following Johnston's death.
She worked on patrol and in the narcotics unit before deciding to become a helicopter pilot.
There were still many questions left unanswered yesterday, like why a narcotics unit out of Manhattan handled the case.
Under the department's new order, anyone joining a narcotics unit must first submit to a urine analysis.
The Police Department, although big enough to have its own narcotics unit, is too small to allow officers to work undercover.
Since 1985, the narcotics units have tripled to 1,500, taking more police officers from regular patrolling.
The narcotics unit has gone through the city's 2,800 apartment buildings and found evidence of drug trafficking in 650.
The city's narcotics unit was reduced and few drug arrests were made.