Pittsburgh Police hats with checkered bands, which are dark navy blue and gold in color, popularly known as the "Sillitoe Tartan" and named after its originator, Percy J. Sillitoe, Chief Constable of Glasgow, Scotland, in the 1930s. While the checkered band is a common police symbol in the United Kingdom, Australia and some European countries, the Chicago Police Department, Cook County Sheriff's Police, the Allegheny County Sheriff's Office, and the Pittsburgh Bureau of Police are the only police forces in the United States that have adopted it as part of their uniforms. As recently as July 1930, police were required to wear
Police cadets in the United Kingdom full-time frontline employees who were aged 16-19. The Metropolitan Police Service introduced one such scheme in 1948. These Police Cadets had no powers of arrest but were able to assist their senior colleagues in many practical matters, such as taking statements, directing traffic, or offering crime prevention advice, as well as observing the work of their supervisors. This incarnation of the Police Cadets could be compared to present-day Police Community Support Officers. On reaching the age of 19, a Cadet would either apply for training as a police officer, or leave the police force. In 1980 the ITV television network