At ~2:32 PM, Westmoreland 911 dispatched Station 20 (Murrysville VFC) for an Automatic Fire Alarm (AFA) at the Murrysville Dairy Queen. Station 20 responded with 4 firefighters (including Assistant Chief 20) going to the station to crew Engine 20, with Chief 20 going directly to the scene. Westmoreland 911 also dispatched the following additional stations to support Station 20: Station 22 (Export VFC), Station 64 (White Valley VFC), Station 78 (Sardis VFC), and Station 236 (Holiday Park VFC). Chief 20 was first on scene, established command, fouind no smoke or fire coming from the structure, and found that a power outage had caused a cooking accident that activated the AFA System. Command 20 returned all stations except for Station 20 to service, and Engine 20 arrived at the scene to ventilate the structure. Once the structure was ventilated, Command 20 returned Engine 20 to service and station.