The Pittsburgh Bureau of Fire (PBF) provides fire protection, emergency medical services and hazardous material mitigation to the city of the City of Pittsburgh, Pennsylvania. In all the department is responsible for with a population of 305,841 as of the 2013 Census estimation. The Bureau holds the distinction of being the first fire department in the United States to unionize and thus has a International Association of Fire Fighters (IAFF) number of 1.