ISS construction. Astronaut Lee M E Morin performing a space walk (extravehicular activity, EVA) during the construction of the International Space Station (ISS). He is holding a keel pin from the S0 (S-zero) Truss. The S0 Truss was attached to the ISS during this mission, STS-110. This was the second of four space walks on this mission, and it was Morin's first. Photographed on 13th April 2002.
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