From anecdotal evidence, the few search and rescue units I've been involved with (all non-technical volunteer units) have been overwhelming against charging subjects, at least as a general rule.
But the considerations for something like this are pretty much entirely different, risk to non-technical rescuers is pretty minimal and the costs are just gas and the time spent on what is essentially just an unplanned hike with some extra gear.
But the considerations for something like this are pretty much entirely different, risk to non-technical rescuers is pretty minimal and the costs are just gas and the time spent on what is essentially just an unplanned hike with some extra gear.