 Lastly, the department enforces all state and federal hazardous materials (HAZMAT) regulations within the city, and coordinates the response to such incidents.The IAFF local is 22.The PFD is the largest fire department in the Commonwealth of Pennsylvania and also has the busiest Emergency Medical Services division in the United States with a single ambulance, Medic 2, responding to 8,788 calls in 2013 and Medic 8 responded to 9,011 calls in 2018.