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 and removed its final launch restraints.
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