Astronaut Kayla BarronExperience: Barron was commissioned as a Navy officer in 2010 and immediately attended graduate school. Her graduate research focused on modeling the fuel cycle for a next-generation, thorium-fueled nuclear reactor concept. Following graduate school, Barron attended the U.S. Navy’s nuclear power and submarine officer training before being assigned to the USS Maine, an Ohio-class ballistic missile submarine homeported in Bangor, Washington. Barron qualified as a submarine warfare officer and completed three strategic deterrent patrols while serving as a division officer aboard the Maine. At the time of her selection, Barron was serving as the Flag Aide to the Superintendent of the U.S. Naval Academy.
https://www.nasa.gov/astronauts/biographies/kayla-barron/biography