So how does this work? You have a physician who has signed off on this protocol? Are there geographic limits (only in the state, only in the region, only in a county etc.)?
In a word, yes. WFR protocols are established, monitored and modified by physicians specializing in wilderness medicine. I believe the protocols are accepted worldwide as the training is available worldwide. It's a bigger and more specialzed field than you might think. Due to the remote nature of environments encountered, the protocols are not challenged because there may be no other options and the responder is working within their scope of training.
From NOLS/WMI...
You can also expect a curriculum that is evidence-based, not just copied out of a textbook. We teach wilderness medicine practices and protocols that are supported by a physician-based medical advisory panel and disseminated by our curriculum director. This means you're getting the latest findings and protocols in the industry.