At ~ 5:29 PM, Westmoreland 911 dispatched Station 20 (Murrysville VFC) for an odor of natural gas in a home on Bulltown Road. Station 20 responded with Truck 20 (2 firefighters including Lieutenant 20) and Engine 20 (3 firefighters), with Assistant Chief 20 going directly to the scene. Westmoreland 911 dispatched the following stations to support Station 20: Station 78 (Sardis VFC), Station 22 {Export VFC}, Station 64 (White Valley VFC), and Station 610 (Murrysville Medic One). Assistant Chief 20 was first on scene, established command, with Truck 20 and Engine 78 arriving soon after. Engine 20, Engine 22-1, Engine 64, and Medic 616 were staged on Bulltown Road due to restricted access to the home. Investigation by the crews from Truck 20 and Engine 78 were not able determine the presence of natural gas. Command 20 requested that Westmoreland 911 have Peoples Natural Gas dispatch a crew to the scene to further investigate the incident. With the arrival of the Peoples Natural Gas crew, Command 20 released all Fire/EMS units for return to service and station.