Under the provisions of Department of Defense 1348.33-M, the Secretary of Defense of the United States of America takes pleasure in awarding the Defense Superior Service Medal to Major Mark William Stephenson, United States Army, for exceptionally superior service to the Department of Defense as Line Officer, Johnson Space Center, from 1992 to 1996. The distinctive accomplishments of Major Stephenson reflect great credit upon himself, the United States Army, and the Department of Defense.