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Flight Engineer Drew Morgan of NASA is pictured in the vestibule between the Unity module and the Northrop Grumman Cygnus space freighter shortly after its hatch was closed. Morgan was selected by NASA in 2013 as an astronaut candidate after serving in the Military Health System as an emergency physician with special operations units worldwide.  (NASA photo, Editor: Victoria Ugalde)

Flight Engineer Drew Morgan of NASA is pictured in the vestibule between the Unity module and the Northrop Grumman Cygnus space freighter shortly after its hatch was closed. Morgan was selected by NASA in 2013 as an astronaut candidate after serving in the Military Health System as an emergency physician with special operations units worldwide. (NASA photo, Editor: Victoria Ugalde)

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