An overhead crane is being attached to the S3 S4 truss structure in order to move from a rotation stand to a work stand.

In the Space Station Processing Facility, an overhead crane is being attached to the S3/S4 integrated truss structure in order to move it from a rotation stand to a work stand. Along with a third set of solar arrays and batteries, the truss is scheduled to fly on mission STS-117 aboard Space Shuttle Atlantis to the International Space Station. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Dimitri Gerondidakis