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
World Police and Fire Games Northern Ireland, and ending with Glasgow, Scotland, hosting the 2014 Commonwealth Games - the first time all three events have been hosted by the same nation consecutively. The host city of the 2015 World Police and Fire Game was Fairfax County, Virginia, in the United States, with venues located around the Washington metropolitan area. The California Police Olympics were first held in 1967. The concept evolved over the years and led to the creation of the World Police & Fire Games Federation—a non-profit organization, run by the Californian Police Athletics Federation—in 1983. Two years later, in 1985, the first World