Patient with low oxygen levels at Groton residence Heard on: Greater Lowell Public Safety 00:21 00:00 Sir, do you have an ALS unit that you could send to (number withheld) West Main Street? Unit number (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 Sir, do you have an ALS unit that you could send to (number withheld) West Main Street? Unit number (number withheld). 00:07 We have a BLS unit already on scene. 00:12 Radio, what's it for? 00:18 Uh, BLS unit reporting low O2 sat. 2026-10-28 21:57 UTC Medical Emergency West Main Street, Groton, MA 01450 View on map