How many hours have been saved with people not getting lost (maps + gps) ... a few of my friends have called the coast guard to come rescue them. No idea if the

How many hours have been saved with people not getting lost (maps + gps) ... a few of my friends have called the coast guard to come rescue them. No idea if they would have died, but lets assume that some of those people with phones have used them to save a life. Looking up stuff. Taking photos and videos.