Exterior view of Heathrow airport's control tower, London. Looking upwards we see the 87 metre high structure in the middle of the airfield. Designed by the Richard Rogers Partnership and opened in 2007, the NATS tower oversees 1,350 aircraft movements a day at Heathrow. From the chapter entitled 'Up in the Air' and from the book 'Risk Wise: Nine Everyday Adventures' by Polly Morland (Allianz, The School of Life, Profile Books, 2015).