Stock Photo - 05/17/2002 _ STS_111 Commander Kenneth Cockrell left settles in the seat of the slidewire basket while Pilot Paul Lockhart right gets ready to pull the release lever. They and the rest of the STS_111 crew and the Expedition 5 crew are taking part in Terminal Countdown Demonstration Test activities, which include emergency egress training and a simulated launch countdown. Mission STS_111 is Utilization Flight 2, carrying equipment and supplies in the Multi_Purpose Logistics Module Leonardo to the International Space Station, plus the Mobile Base System MBA and an Orbital Replacement Unit. The MBS will be installed on the Mobile Transporter to complete the Canadian Mobile Servicing System, or MSS, enabling Canadarm 2 to inchworm from the U.S. Lab Destiny to the MSS and travel along the truss to work sites. The Expedition 5 crew is traveling on Endeavour to replace the Expedition 4 crew on the Station. Launch of Endeavour is scheduled for May 30, 2002