Repairs in Space. Astronaut using a special power tool conduct an experiment. His feet are anchored in the mobile foot restraints, which are connected the Remote Manipulator System's (RMS) End Effector. The Shuttle pallet satellite serves as a test subject for McCandless's experiment. The SPAS-01A is located in the of the open cargo bay. Behind him is the protective cradle for the Westar VI satellite (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.