At ~12:24 PM, Westmoreland 911 dispatched Station 20 (Murrysville VFC) for an Automatic Fire Alarm (AFA) at a home on Old William Penn Highway. Station 20 responded with 5 firefighters (including Lieutenant 20) going to the station to crew Truck 20, while Assistant Chief 20 went directly to the scene. Westmoreland 911 also dispatched the following stations to support Station 20: Station 22 (Export VFC), Station 64 (White Valley VFC), and Station 78 (Sardis VFC). Assistant Chief 20 arrived at the scene, established command, found no smoke or fire coming from structure, and held all stations in quarters until the incident was investigated. Command 20 found that the home's AFA System was activated by a cooking accident, and no fire/rescue services were needed at the scene. Command 20 returned all responding stations to service, and assisted the homeowner in resetting the AFA System.