In the final episode of the live behind-the-scenes series from Heathrow, Kate Humble is in the air traffic control tower, Dan Snow sees if he has got what it takes to be an air traffic controller and Anita Rani finds out how tomorrow's planes might offer a quieter future. Dallas Campbell, whose father used to fly 747s, is at the controls of a flight simulator to see if he can land an A380, the biggest passenger jet in the sky. Show less