This is the location that the Pine Mountain Club residents have their "Community Emergency Response Team" (CERT) equipment stored and also where they do their training. I believe the CERT falls more under disaster_response than mountain rescue. See: https://en.wikipedia.org/wiki/Community_emergency_response_team

There is a location tagged with mountain rescue fairly close near by at https://www.openstreetmap.org/way/85211449 which is the base the the volunteer backcountry ski patrol that works with the US Forest Service.

For what it is worth, I am a volunteer with the backcountry ski patrol and have a cabin in Pine Mountain Club, thus the "local knowledge" source.