S89-29370 (March 1989) --- These five astronauts have been assigned to man the Space Shuttle Columbia for STS-28, a Department of Defense-devoted mission scheduled for July of this year. Brewster H. Shaw (center, front) is mission commander; and Richard N. Richards (left) is pilot. Mission specialists are, left to right, Mark N. Brown, James C. Adamson and David C. Leestma (seated).