Thanks to all that assisted during the call tonight on AM Drive. The initial call came in as 18:12 for an investigation. Crews found a propane tank leaking with fire on the heat exchangers. At that point the call was upgraded to a full box assignment. Crews established a water supply and had 1 hand line placed in service. Multiple crews used meters to monitor the air quality inside and outside the building while securing the tank. Bucks County Hazmat team was also dispatched to assist us with operations.