NASA Astronaut, Andrew Thomas (PH.D) responds to questions from the media during an informal briefing at the Kennedy Space Center, Fl. on May 3, 2005. Dr. Thomas is assigned as a Mission Specialist for the upcoming flight of STS 114, NASA's return to flight. Dr. Thomas has also spent 141 days in space aboard the Mir Space Station. (UPI Photo/Marino/Cantrell)
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