This from Alex Alexandrovski…

It’s been some time since my last post, but luck wasn’t on my side chasing CFD company patches.
However, I did manage to pick up a mystery patch recently. It is from an Ambulance 30.
fire company patch
To my knowledge there are only two units in the US that are designated Ambulance 30 – one in Chicago and the other one in Washington DC. It doesn’t look like the DCFD would make a separate patch for an Ambulance (Medic unit is their first line of defence), but I’m trying to verify that as well.
Do you know if somebody could confirm whether the above patch is from Chicago FD or not? Any help will be greatly appreciated.
Stay safe