S89-46513 (15 Sept 1989) --- Three members of the STS-34 crew rehearse for their pre-launch procedures at Launch Pad 39B during Terminal Countdown Demonstration Test (TCDT) activities at Kennedy Space Center (KSC). From the foreground, Astronauts Shannon W. Lucid, Michael J. McCulley and Donald E. Williams are at the 195-ft. level of at Pad B. The crew entered Atlantis for the mock countdown. The five astronauts are expected to spend more than five days in Earth orbit next month, with their primary objective being to release the Galileo spacecraft and send it on its way to Jupiter. Not in the frame are Astronauts Franklin R. Chang-Diaz and Ellen S. Baker. (KSC-89PC-898)