jimjim1, see my post #290. If sightseeing is the only goal, there are plenty of modern alternatives available (such as smaller and more modern aircraft and helicopters) at all these locations. No one is forcing the public to fly on an historical aeroplane. It's their choice. What diving to a depth your friend's daughter is not trained for has to do with this issue is beyond me. However, the same applies, no one is forcing her to do it. It's her choice!