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KENNEDY SPACE CENTER, Fla. -- In the White Room, STS-104 Mission Specialist Janet Lynn Kavandi (center) shares a laugh with closeout crew members before entering Space Shuttle Atlantis. 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. Atlantis lifted off from Launch Pad 39B on time at 5:03:59 a.m. EDT. The 10th assembly flight to the International Space Station, the primary payload on the mission is the joint airlock module, which will require two spacewalks to attach it to the Space Station. The airlock will be the primary path for Space Station spacewalk entry and departure for U.S. spacesuits, and will also support the Russian Orlan spacesuit for EVA activity