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
Chief of police An alternative and lesser-used solution is to make the office of sheriff a purely ceremonial one. One other solution, an example of which is seen in the case of the Las Vegas Metropolitan Police Department, is to provide for the sheriff to simultaneously serve as the chief of police, thus remaining as the chief law enforcement officer (CLEO) of the county. The police chief of a small town may be the only paid employee of the police department and have a staff consisting only of volunteers when available. Conversely the police chief of a major city may have thousands or