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At any one time, there are a million people airborne somewhere in the world. That equates to an entire airborne city - a ‘city in the sky’. So what does it take to run a ‘city’ at 30,000 feet? In this series, we set off around the world to uncover the invisible global networks and complex logistics that make it all possible.

Episodes

Season 1
Episode 3
There are around a million people airborne at any one time. But what goes up must come...
Season 1
Episode 2
We take flight for granted, but on any journey a hidden army of people keep your plane...
Season 1
Episode 1
Louisa has shocking news for Martin, Bert and Jennifer's party goes off with a bang, and...


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What does it take to keep a million people airborne at 30,000 feet across the globe?