There are search and rescue volunteers, and most counties have a team (that's usually roughly proportional in size to the population of the county), and while they don't get tax breaks, a few places are nice enough to offer them discounts here and there.
Medical training varies from team to team, but a minimum of wilderness first aid is pretty typical. EMT is pretty popular too.
Medical training varies from team to team, but a minimum of wilderness first aid is pretty typical. EMT is pretty popular too.