Canadian Space Agency astronaut Steve MacLean, Atlantis' mission specialist No. 4, climbs to the flight deck aft-right seat. MacLean, 51, was born in Ottawa, Ontario. Selected as one of the first six Canadian astronauts in 1983, he flew as a payload specialist aboard shuttle Columbia in 1992.
Source: NASA TV (1 min 19 sec QuickTime 6 file)
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