At ~ 10:38 AM, Westmoreland 911 dispatched Station 20 (Murrysville VFC) for an Automatic Fire Alarm (AFA) at Redstone Highlands Murrysville. Station 20 responded with 5 firefighters going to the station to crew Truck 20, with Chief 20 and Lieutenant 20 going directly to the scene. Westmoreland 911 also dispatched the following Stations to support Station 20: Station 64 (White Valley VFC), Station 22 (Export VFC), Station 78 (Sardis VFC), Station 87 (Harrison City VFC), and Station 610 (Murrysville Medic One). Chief 20 and Lieutenant 20 arrived on scene, command was established, no smoke or fire was coming from the structure, and it was found that the AFA System had been tripped due to a change in pressure in the sprinkler system. Command 20 returned all responding units to service and station.