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Barbara Schwartz June 16, 1993

RELEASE 93-046


Col. Mark N. Brown will leave NASA in July and will retire from the U.S. Air Force to head up the Space Division office of General Research Corporation in Dayton, Ohio.

The Space Division supports NASA, the Department of Defense, and the commercial sector. As part of his duties in heading the Space Division, Brown also will provide assistance to the co-located Aeronautics Division. GRC is a multi-disciplinary aerospace corporation with offices across the U.S. and in London, England.

"It has been a privilege to work with the folks at NASA as both an engineer and astronaut. Each day has offered new challenges, and I have thoroughly enjoyed working with the fine people across the agency," Brown said.

Brown has worked at Johnson Space Center since 1980. He was working in the Flight Activities Section of the Mission Operations Directorate when he was selected to become an astronaut in 1984. In Dec. 1985, he was assigned to the crew of a Department of Defense mission which was subsequently canceled because of the Challenger accident. During 1986 and 1987, Brown served as an astronaut member of the solid rocket booster redesign team.

Brown served as a mission specialist on two Space Shuttle missions. He flew on STS-28, a Department of Defense mission, in August 1989, and STS-48, the Upper Atmosphere Research Satellite mission, in September 1991. The UARS was deployed to gather data on the chemistry of Earth's upper atmosphere and to measure solar winds and energy. The crew also conducted numerous secondary experiments ranging from growing protein crystals to studying how fluids and structures react in weightlessness.

Since STS-48 in 1991, Brown served as deputy chief of Flight Crew Operations Directorate's Station-Exploration Office. Most recently Brown has been a member of the space station redesign team working on Option C, providing crew expertise to the planning process.

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"Mark has made significant contributions to the Shuttle Program and to the Space Station Program in addition to his accomplishments as an astronaut. We'll miss him, and wish him success in his new career," director of Flight Crew Operations David C. Leestma said.



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