At ~ 10:43 AM, Westmoreland 911 dispatched Station 20 (Murrysville VFC) to assist Station 236 (Holiday Park VFC) for a report of an odor of gas in the Citizens Bank on Golden Mile Highway. Station 20 responded with Truck 20 (5 firefighters including Lieutenant 20 and Sergeant 20), with 6 firefighters (including Assistant Chief 20) on station standby. Command 236 cancelled Truck 20 while enroute. Truck 20 returned to service and station.