In the Space Station Processing Facility an overhead crane moves the P4 truss to a workstand.

In the Space Station Processing Facility, an overhead crane moves the P4 truss to a workstand. Part of the 10-truss, girder-like structure that will ultimately extend the length of a football field on the International Space Station, the P4 is the second port truss segment that will attach to the first port truss segment (P1 truss). The P4 is scheduled for mission 12A in September 2002.