If you own snow mobiles, you may consider contacting your local emergency management office. They may like to have volunteers that would be willing to help out. Especially in areas where severe winter weather does not occur more than a few days on average over a few years.
Most places won't do this, but at least if you're part of emergency response before hand, it is really unlikely your equipment could be "borrowed" (with "just" compensation ) during a local state of emergency.