About
STS-103 Mission Specialist John M. Grunsfeld (Ph.D.) gets ready to take the wheel of a small armored personnel carrier that is part of emergency egress training during Terminal Countdown Demonstration Test (TCDT) activities. The tracked vehicle could be used by the crew in the event of an emergency at the pad during which the crew must make a quick exit from the area. The TCDT also provides simulated countdown exercises and opportunities to inspect the mission payloads in the orbiter's payload bay. STS-103 is a "call-up" mission due to the need to replace and repair portions of the Hubble Space Telescope. Four EVA's are planned to make the necessary repairs and replacements on the telescope. — NASA KSC · 1999. ABD devlet eseri: kamu mali, ticari islerde de serbestce kullanilabilir.
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