Inside the Vehicle Assembly Building, the orbiter Atlantis rests atop a transporter in the transfer aisle while an overhead crane is placed around the space vehicle. The crane will lift Atlantis to a vertical position so it can be mated with its external tank and solid rocket boosters before being transported to Launch Pad 39A. Atlantis will fly on mission STS-101 to the International Space Station, where its crew of seven will prepare the Station for the arrival of the next pressurized module, the Russian-built Zvezda. Atlantis is expected to launch no earlier than April 17, 2000