Hi Asfwt,
Good to see a fellow FF on here. I've helped get a few down, with the first one being over 20 years ago (it was a RC plane). For us, if someone calls 911 they'll be told no, since it sidelines resources, and also poses a (small) risk to FF who climb the ladder.
Your best bet would be to go to the nearest firehouse (with a ladder truck) in person, explain your situation and ask nicely. Where I work it tends to be up to the discretion of the truck officer. If it's a valuable drone you stand a much better chance than a $80 toy.
A lot depends on the access to the drone. The outriggers on our truck go WAY out, and with street parking and power lines it may not be doable. Also, if it's on the back side of the tree, that makes rescue unlikely. This falls vaguely under our responsibility to protect life and property. I would sure like a hand if my drone ever got stuck in a tree, but some people are just salty.
Regards,
Kevin