The Mobile Base System MBS, grappled to the Canadarm2 Space Station Remote Manipulator System SSRMS, is held aloft between a backdrop of Earth's limb on the left and an ISS Solar Array SA on the right during STS-111 UF-2 operations to install the system to the ISS integrated truss structure. In the lower FOV is a section of the S0 S-zero Truss.
