Organizations
- NASA Advisory Council, at-large member 1998-2000
- Astronaut Scholarship Foundation, chairman of the board (2011- )
- Air Force Association
- Society of Experimental Test Pilots
- Reserve Officers Association
- USNA Alumni Association
- Full Gospel Businessmen's Fellowship
- Christian Business Men's Committee
- International Fellowship of Christian Businessmen
- Explorers Club
- National Space Society
- Young Astronaut Council, former director
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