Image of the Day Gallery
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A Final Spacewalk
Astronaut Patrick Forrester participates in the mission's fourth and final session spacewalk. Among other tasks, Forrester and fellow astronaut Steven Swanson continued activation of the station's new starboard 3 and 4 (S3/S4) truss segment; checked out the Drive Lock Assembly 2, one of two mechanisms that will drive rotation of the S3/S4 Truss Solar Alpha Rotary Joint (SARJ) and removed its final launch restraints.
Image credit: NASA