A St. Joseph Policeman decided to call it quits after 15 years. Time Winnipeg Police Constable has decided to call it quits after 18 years of service.A Winnipeg Police Officer has decided to call it quits after 18 years of service. He was still in the driver's seat of his car. When officers got there. Chief Troy Finner retired from the Houston Police Department in a latenight resignation given to Mayor John Whitmire amid an ongoing probe. Chief Cerelyn Davis also ran a special unit in Atlanta that had a similar reputation for overly aggressive tactics. The Houston Police Department Internal Affairs Division was created in 1977 and is mandated to investigate allegations of misconduct against employees.