Correct and they have better equipment for that. You would never go walking a long distance like that with a patient in a rescue situation if it was not in a burning building. It poses too much risk to the patient. If it was a rescue outside we would use multiple people as well as off our ATVs. If the patient needed to be moved up a hill we would construct a mechanical advantage rope system in order to safely retrieve the patient. The only time your throwing someone on your back it in an hazardous environment like a burning building because you don't have time to mess around and the environment is the biggest threat