At ~4:21 PM, Westmorland 911 dispatched Station 20 (Murrysville VFC) for an Automatic Fire Alarm at a home on Trouthaven Drive. Station 20 responded with Lieutenant 20 going directly to the scene, and several firefighters going to the station to crew Truck 20. Also dispatched to assist Station 20 were Station 64 (White Valley VFD), Station 22 (Export VFD), and Station 78 (Sardis VFC). Lieutenant 20 was first on scene, found no smoke or fire, and found that the AFA had been tripped by construction in the residence. Lieutenant 20 cancelled all responding units including Truck 20.