Dr. Mica Endsley, Chief Scientist of the U.S. Air Force, sits in an altitude chamber in preparation for a U-2 Dragon Lady high-altitude flight at Beale Air Force Base, Calif., April 23, 2015. Endsley’s mission is to serve as the chief scientific adviser to the Chief of Staff and Secretary of the Air Force, and provide assessments on a wide range of scientific and technical issues affecting the Air Force mission. (U.S. Air Force photo by John Schwab/Released)

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Photo by: John SchwabReleased |  VIRIN: 150423-F-FP673-077.JPG