Person having trouble breathing on South Jefferson Street Heard on: Frederick County MD EMS-Tac 00:09 00:00 Frederick unit responding to South Jefferson Street (number withheld). 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 Frederick unit responding to South Jefferson Street (number withheld). 00:03 We upgraded the call to ALS for one having trouble breathing. 00:06 Switch operations to 9 Delta 00:09 520. 2026-10-22 09:19 UTC Medical Emergency S Jefferson St, Frederick, MD 21701 View on map