ArrivalS1 Ep3 |Getting on the ground safely takes an army of hidden experts and incredible technology.
About City in the Sky
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.