There's also rescue shock, where the person subconsciously lets their adrenaline drop when they see rescuers arrive. They drop their energy reserves and their body stops fighting. This can have a refractory effect, so our job is to keep their spirits up, maintain their body heat and keep them going until we get them out of where they are. People who are lost or who don't anticipate changes in the weather are common calls. A lot of it has to do with knowledge and not respecting nature as much as they should.
Weather can really do people in quickly.
For the high-angle incidents that we respond to, it's usually someone who will climb up a mountain but cannot get down, or they may not have the proper mountaineering training and they either get stuck or fall. No mountain is too high. However, weather and environmental conditions often present obstacles. For example, if we cannot get a helicopter into the site, we may have to enter on foot, which may mean 6 hours to reach a scene. Access is really the only problem.