At ~9:32 AM, Westmorland 911 dispatched Station 20 (Murrysville VFC) to assist Station 9 (Level Green VFC) for a Carbon Monoxide Alarm Activation at a home on 1st Street, Penn Township. Also dispatched were Station 9 (Level Green VFC), Station 7 (Paintertown VFC), and Station 86 (Trafford VFC). Station 20 responded with Rescue 20 (3 firefighters including Chief 20 and Lieutenant 20). Chief 86 was first on scene, and cancelled all responding units except for Attack 86 and Engine 9). Rescue 20 returned to Station.