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GENEVA, SWITZERLAND - APRIL 29: Michael Gill, Executive Director of the Air Transport Action Group (ATAG) launches a new report on the benefits of aviation at the group's Global Sustainable Aviation Summit 2014 on April 29, 2014 in Geneva, Switzerland. The report says that 58 million jobs and $2.2 trillion in GDP are supported by air transport. (Photo by Justin Hession/Getty Images for Air Transport Action Group)

GENEVA, SWITZERLAND - APRIL 29:  Michael Gill, Executive Director of the Air Transport Action Group (ATAG) launches a new report on the benefits of aviation at the group's Global Sustainable Aviation Summit 2014 on April 29, 2014 in Geneva, Switzerland. The report says that 58 million jobs and $2.2 trillion in GDP are supported by air transport.  (Photo by Justin Hession/Getty Images for Air Transport Action Group)