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Visitor queue to access an Airbus A380-800 aircraft, operated by Etihad Airways, on the second day of the 14th Dubai Air Show at Dubai World Central (DWC) in Dubai, United Arab Emirates, on Monday, Nov. 9, 2015. The Dubai Air Show is the biggest aerospace event in the Middle East, Asia and Africa and runs Nov. 8 - 12. Photographer: Jasper Juinen/Bloomberg via Getty Images

Visitor queue to access an Airbus A380-800 aircraft, operated by Etihad Airways, on the second day of the 14th Dubai Air Show at Dubai World Central (DWC) in Dubai, United Arab Emirates, on Monday, Nov. 9, 2015. The Dubai Air Show is the biggest aerospace event in the Middle East, Asia and Africa and runs Nov. 8 - 12. Photographer: Jasper Juinen/Bloomberg via Getty Images