Person having a stroke near South Mason Avenue in Chicago Ridge Heard on: Palos Heights Police, Fire/Orland Park Fire, EMS 00:20 00:00 Chicago Ridge, 6512, ambulance stroke at (number withheld) South Mason Avenue. 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 Chicago Ridge, 6512, ambulance stroke at (number withheld) South Mason Avenue. 00:17 (number withheld) South Mason Avenue, did you want that to the desk? 6/20/2026 05:54 PM Medical Emergency S Mason Ave, Alsip, IL 60803 View on map