WIKIARCHIVES.SPACE

STS-79 Mission Specialist John E. Blaha (right) gets a helping hand from JSC suit technician Carlos Gillis as the six STS-79 astronauts wrap up Terminal Countdown Demonstration Test (TCDT) activities at Launch Pad 39A. The TCDT is a dress rehearsal for launch and culminates with a simulated countdown. The Space Shuttle Atlantis is undergoing preparations for liftoff on STS- 79, the fourth docking of the U.S. Space Shuttle to the Russian Space Station Mir, no earlier than Sept. 12.