Both the State Police Command Post and the Amateur Radio net are secured so the feed is coming down shortly. Next year I'll hopefully have a better handle on pre-emptively locking out channels/TGs that aren't being used.
Based off radio traffic from a recent medical incident Boston EMS is being dispatched (or at least notified) through the State Police Command Post. However I'm not picking up any traffic on the (non simplex) EMS-Tac channels. It's possible they're using their standard dispatch on 462.975 R which I'm monitoring out of band. They could also be using one of the simplex EMS-Tac channels which I won't be able to pick up from here.
We used to be dispatched on Tac 9, which is not Tac 3 (I think). There wasn't a lot of simplex channel use back then either. The size of our detail varied from year to year, being bigger in the good weather.
At the time we had several bikes, a supervisor, and one ambulance. Since I retired in 2012, Special Ops has a lot of new equipment, so that configuration might no longer be valid.