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FILE: WASHINGTON, DC - MAY 19: Jeff Smisek, chairman, president and CEO of United Airlines participates in a Senate Commerce, Science and Transportation Committee hearing on Capitol Hill, May 19, 2015 in Washington, DC. The committee is hearing testimony on US air traffic control modernization and reform. (Photo by Mark Wilson/Getty Images)
FILE: WASHINGTON, DC - MAY 19: Jeff Smisek, chairman, president and CEO of United Airlines participates in a Senate Commerce, Science and Transportation Committee hearing on Capitol Hill, May 19, 2015 in Washington, DC. The committee is hearing testimony on US air traffic control modernization and reform. (Photo by Mark Wilson/Getty Images)

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United Airlines CEO resigns amid corruption probe

Jeff Smisek, the United Airlines CEO, has stepped down during a federal corruption investigation. CNN's Richard Quest has the details.

United Airlines CEO resigns amid corruption probe

Jeff Smisek, the United Airlines CEO, has stepped down during a federal corruption investigation. CNN's Richard Quest has the details.