Medical emergency upgraded to advanced life support at apartment Heard on: Contra Costa CA Fire Dispatch Group Calls 00:28 00:00 Calling for Captain, Truck 1. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Calling for Captain, Truck 1. 00:03 Captain truck one, go ahead. 00:06 Upgrade us to ALS code three. 00:10 ALS code three, Contra Costa. 00:13 Medic 16 , respond to additional resource (number withheld) Walker Avenue, (number withheld) Walker Avenue, apartment (number withheld) , crossing Sierra Drive. 00:20 This is on the request of truck one requesting upgrading code three ALS. 00:24 BLS 23 , you can cancel. 00:27 BLS 23 , copy cancel. 9/7/2026 01:01 AM Medical Emergency Walker Ave, Walnut Creek, CA 94596 View on map