STS-29 crewmembers inspect TDRS-D inertial upper stage (IUS) at KSC VPF

S89-28108 --- Astronaut Mae C. Jemison and STS-29 Mission Specialist James P. Bagian and Robert C. Springer inspect the interface between the tracking and data relay satellite D (TDRS-D) and inertial upper stage (IUS-9) in a test cell located in the Kennedy Space Center (KSC) Vertical Processing Facility (VPF). The clean-suited astronauts, engineers, and technicians discuss the payload. Photo credit: NASA