This has made the flying experience even more difficult, particularly for the business travelers that provide most of the revenue.

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From water, though, flying aloft is more difficult.

ECONOMIST: Aerobiology

William donned headphones to DJ at the centre - but admitted his attempt at mixing Run DMC's It's Like That with a collection of beats and samples had been more difficult than his day job of flying a helicopter.

BBC: Prince William and Catherine playing table tennis