Kent Rominger and Mission Specialist Umberto Guidoni pose for a photo during Crew Equipment Interface Test activities in the Space Station Processing Facility.

STS-100 Commander Kent Rominger and Mission Specialist Umberto Guidoni (right), with the European Space Agency, pose for a photo during Crew Equipment Interface Test activities in the Space Station Processing Facility. Behind them is the Space Station Remote Manipulator System (SSRMS), also known as the Canadian arm, which is part of the payload on their mission. 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. The payload also includes the Multi-Purpose Logistics Module (MPLM) Raffaello. MPLMs are pressurized modules that will serve as the International Space Station's “moving vans,” carrying laboratory racks filled with equipment, experiments and supplies to and from the station aboard the Space Shuttle. Mission STS-100 is scheduled to launch April 19, 2001