Carbon Monoxide Alarm

Timeline

1. 1:09am
   Battalion 6, Engine 3 and Truck 3 dispatched to an odor investigation inside Villa Maria Building 6, 1300 block of Walker Avenue NW
2. 1:14am
   Battalion 6 on scene at a three-story elderly retirement complex, nothing showing; establishing command. Engine 3 assigned as investigation group.
3. 1:15am
   Truck 3 and Engine 3 on scene at the retirement complex
4. 1:18am
   Resident called in about an alarm; unsure if smoke or carbon monoxide
5. 1:20am
   Cause: low battery on a CO alarm. Engine 3 can handle; all other units clear.
6. 1:20am
   Command acknowledges Engine 3 handling low battery on CO alarm
7. 1:33am
   Investigation reports alarm reset and holding