At ~ 5:55 PM, Westmoreland 911 dispatched Station 20 (Murrysville VFC) to assist Station 78 (Sardis VFC) for an Automatic Fire Alarm (AFA) at a residence on Edwards Road. Station 20 responded with 5 firefighters going to the station to crew Engine 20. At the firefighters were arriving at the station, Command 78 returned all responding stations except for Station 78. Engine 20 remained in service and in station.