Side-by-Side

Astronauts Patrick Forrester (left) and Steven Swanson participate in the STS-117 mission's fourth and final spacewalk. Among other tasks, Forrester and Swanson continued activation of the station's new starboard 3 and 4 (S3/S4) truss segments; checked out the Drive Lock Assembly 2 and removed the final launch restraints on the SARJ.

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