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In the White Room, STS-100 Commander Kent V. Rominger (center) is helped by closeout crew members (left to right) Jean Alexander, Danny Wyatt and Rick Welty before entering Space Shuttle Endeavour.  The White Room is an environmental chamber at the end of the Orbiter Access Arm that provides entry into the orbiter on the launch pad.  The  mission will deliver and integrate the Spacelab Logistics Pallet/Launch Deployment Assembly, which includes the Canadian-built Space Station Remote Manipulator System and the UHF Antenna.  Two spacewalks are planned for installation of the SSRMS, which will be performed by Parazynski and Hadfield. The mission is also the inaugural flight of Multi-Purpose Logistics Module Raffaello, carrying resupply stowage racks and resupply/return stowage platforms.  Liftoff of Space Shuttle Endeavour on mission STS-100 is scheduled at 2:41 p.m. EDT April 19