WIKIARCHIVES.SPACE

At Launch Pad 39A, the astronauts assigned to Space Shuttle Mission STS-79 are wrapping up Terminal Countdown Demonstration Test (TCDT) activities with participation in a simulated countdown. Shown here in the white room of the Orbiter Access Arm is Commander William F. Readdy. Besides the realistic launch day preparation, the TCDT also includes emergency egress training at the pad. The Space Shuttle Atlantis is undergoing preparations for liftoff on the fourth Shuttle-Mir docking flight no earlier than Sept. 12.