"I guess once you have been siiting for a night or two on a glacier in
10'000ft in the middle of August, you might re-think that phrase..."

While that is possible, the odds are that the weather will be clear and if
you have any friends searching for you, a signal mirror works for at least
20 miles and possibly more. Even a old cd works as a signal mirror. If you
are flying over glaciers, then some warm clothing would be useful.

The fact is that you can die of expsure or dehydration or starvation in the
middle of summer when you take an automobile trip, but it is less likely
than in the winter.

Colin