At ~ 9:15 AM, Westmoreland 911 dispatched Station 20 (Murrysville VFC) for an Automatic Fire Alarm (AFA) at Redstone Highlands — Murrysville on Cline Hollow Road. Station 20 responded with 5 firefighters (including Captain 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), Station 78 (Sardis VFC), Station 87 (Harrison City VFC), and Station 610 (Murrysville Medic One). Assistant Chief 20 was first on scene, established command, observed no smoke or fire coming from the structure, and held all responding stations in quarters. Upon investigation, Command 20 found that the Structure's AFA System had a faulty detector, and the staff had reset the system. Command 20 returned all responding stations, and Truck 20 remained in service and in station.