basic life support response to medical aid call Heard on: Snohomish County Fire Primary Response 00:13 Aid 47 BLS three response (number withheld) 172nd street northeast respond on Tac 3 (number withheld) 172nd street northeast. 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. Aid 47 BLS three response (number withheld) 172nd street northeast respond on Tac 3 (number withheld) 172nd street northeast. 2026-10-29 10:09 UTC Medical Emergency 172nd St NE, Arlington, WA 98223 View on map