Yes, it may have been the correct one, but again the Ranger has assumed that the person who has not returned to the vehicle by nightfall was unprepared and unable to cope with a night out on the hill. What is there to stop, for example myself deciding to stay out overnight (deciding there and then to see the sunset and sunrise in such as spectacular place), and just as I have crawled into my bivi/sleeping bag (I might have even consumed a quarter bottle of Scotch Whisky ), not have a Helicopter and Arizona's finest descend on my campsite ruining a quiet and peaceful night out in the wilderness communing with spirit of Geronimo.

No one asked the nosey park ranger to go out and rescue anyone.