Posted: Tue, Jun 11, 2002, 7:52 AM ET (1152 GMT)
Astronauts successfully attached a new mobile base station to the International Space Station on Monday. The unit is designed to allow the station's Canadarm2 robot arm to move around the station on the railcar on the station's truss. The unit was installed Monday by Canadarm2, and an EVA scheduled for Tuesday by Franklin Chang-Diaz and Philippe Perrin will complete the connections of the mobile base station to the railcar. The outgoing Expedition Four and incoming Expedition Five crews held a formal change-of-command ceremony on the station Monday afternoon, but the ceremony was interrupted by an alarm that turned out to be a false fire alarm. The ceremony was a mere formality, as the de facto change of command took place shortly after the shuttle Endeavour docked on Friday.

Related Links:

•  STS-111 status report #12
•  CBS News shuttle coverage
•  Spaceflight Now mission status center
•  SPACE.com mission center