Good one!! I remember a couple of years ago a couple of friends and I were hiking along a river valley in the highlands of Scotland, very remote, when we heard a WHUMP, WHUMP, WHUMP. We looked back to see a Chinook coming up behind, and BELOW us, and it was not too deep a valley! I think the crew got a laugh at three guys trying to find cameras in their fully laden rucksacks as they shot by. I carry my camera in a pocket now, you live and learn

Very cool sight though.