LONDON, ENGLAND - DECEMBER 20 : Passengers stranded at Gatwick waited for updates on their travel options on December 20, 2018 in London, England. Authorities at Gatwick closed the runway after Drones were spotted over the airport on the night of December 19. The shutdown has sparked a succession of delays and diversions in the run up to the Christmas getaway. (Photo by Athanasios Gioumpasis/Getty Images)