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LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

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LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

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LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

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LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

LONDON, ENGLAND - DECEMBER 21: Passengers wait in the South Terminal building at London Gatwick Airport after flights resumed today on December 21, 2018 in London, England. Authorities at Gatwick have reopened the runway after drones were spotted over the airport on the night of December 19. The shutdown sparked a succession of delays and diversions in the run up to the Christmas getaway, in what authorities have called a 'deliberate act' to disrupt the airport. Police continue their search for the drone operators responsible. (Photo by Jack Taylor/Getty Images)

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Passengers sit with their luggage in the South Terminal building at London Gatwick Airport, south of London, on December 21, 2018, as flights started to resume following the closing of the airfield due to a drones flying. - British police were Friday considering shooting down the drone that has grounded flights and caused chaos at London's Gatwick Airport, with passengers set to face a third day of disruption. Police said it was a 'tactical option' after more than 50 sightings of the device near the airfield since Wednesday night when the runway was first closed. (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)

Passengers sit with their luggage in the South Terminal building at London Gatwick Airport, south of London, on December 21, 2018, as flights started to resume following the closing of the airfield due to a drones flying. - British police were Friday considering shooting down the drone that has grounded flights and caused chaos at London's Gatwick Airport, with passengers set to face a third day of disruption. Police said it was a 'tactical option' after more than 50 sightings of the device near the airfield since Wednesday night when the runway was first closed. (Photo by Ben STANSALL / AFP)        (Photo credit should read BEN STANSALL/AFP/Getty Images)