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During Crew Equipment Interface Test for STS-100 crew members, a worker in the Space Station Processing Facility points to a nearby piece of hardware. Behind him is the Space Station Remote Manipulator System (SSRMS), also known as the Canadian arm. The SSRMS is the primary means of transferring payloads between the orbiter payload bay and the International Space Station for assembly. The 56-foot-long robotic arm includes two 12-foot booms joined by a hinge. Seven joints on the arm allow highly flexible and precise movement. Mission STS-100 is scheduled to launch April 19, 2001, carrying the SSRMS and Raffaello, a multi-purpose logistics module.