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Published on Jun 20, 2011
The four astronauts who'll fly shuttle Atlantis on STS-135, the final mission of the Space Shuttle Program, take questions from reporters at Launch Pad 39A at NASA's Kennedy Space Center in Florida. The Q & A session came after completion of the crew's Terminal Countdown Demonstration Test, or TCDT, during which the crew and support personnel familiarized themselves with equipment and procedures leading up to and including launch.