![Side-by-Side](https://www.nasa.gov/wp-content/uploads/2023/03/180886main_image_feature_854_ys_full.jpg?w=1041)
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.
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, one of two mechanisms that will drive rotation of the S3/S4 Truss Solar Alpha Rotary Joint (SARJ); and removed the final launch restraints on the SARJ.Image credit: NASA