Visitors watch an aerial performance by the British Royal Air Force’s (RAF) Red Arrows aerobatic team as they fly BAE Systems Plc Hawk T1 jets in formation during the 13th Dubai Airshow at Dubai World Central (DWC) in Dubai, United Arab Emirates, on Monday, Nov. 18, 2013. The 13th edition of the biennial 2013 Dubai Airshow, the Middle East’s leading aerospace event organized by F&E Aerospace. Photographer: Jason Alden/Bloomberg