keeping with their uniform colours. The arms of the city of Pittsburgh derive from those of the city's namesake, William Pitt, the Earl of Chatham; both coats of arms display a "fess chequy argent and azure", or a blue and white chequered band across the middle of the shield. The use of the chequered pattern by the Pittsburgh police is thus not only in keeping with the practice of various police departments, but is also a direct reference to the city's coat of arms and flag. Whilst not part of their standard uniform, officers from the Joliet Police Department (Illinois) have been noted to wear a green and white chequerboard band around their hats during the Chicago's Saint Patrick's Day Parade. In Florida, Deerfield Beach Fire Station 102 use a yellow and red three-tiered Sillitoe tartan pattern on the sides of their rescue ambulance. This pattern is identical to that used by Fire and Rescue NSW. The Washington, D.C. police wear Sillitoe tartan on their uniform sleeves as of the late 2010s. Spain Blue and white Sillitoe tartan is used by the several local Spanish police forces. Both the Toledo and Mijas local use a three-tiered version on vehicles in a fashion very similar to Australian police vehicles. The Ajuntament de Sóller and Barcelona (Guàrdia Urbana) local Policía both use two-tiered blue and white versions. Canada Use of the Sillitoe tartan is rare in Canada and is usually limited to auxiliary police services. For example, the Toronto Police Auxiliary wear a red and black chequered band on their caps. A two-row Chicago-style Sillitoe tartan is borne on the high-visibility vests of the Vancouver Police, Metro Vancouver Transit Police, and other municipal police forces in the Lower Mainland and on Vancouver Island (along the edges of the horizontal and vertical reflective strips), but not on their high-visibility jackets nor other uniforms. Brazil Four police forces, the State of São Paulo Military Police, State of Espírito Santo Military Police, State of Pará Military Police and Federal District Military Police, and also one auxiliary force, the Civil Guard, wear a black and white Sillitoe tartan pattern on their uniforms, mainly on baseball caps and side hats, parts of their fatigue uniforms. Brunei The Royal Brunei Police Force use blue and white Sillitoe tartan on various police vehicles but not on uniforms. Denmark The duty uniforms of the Denmark Politi (Police) feature reflective black