Expedition 5 Commander Valeri Korzun talks with Tracy Caldwell during suitup for the liftoff of Space Shuttle Endeavour.

Expedition 5 Commander Valeri Korzun (RSA), left, talks with astronaut Tracy Caldwell during suitup for the scheduled liftoff of Space Shuttle Endeavour at 7:44 p.m. EDT. This is Korzun's 2nd Shuttle flight. STS-111 is the second Utilization Flight to the International Space Station, carrying the Multi-Purpose Logistics Module Leonardo, the Mobile Base System (MBS), and a replacement wrist/roll joint for the Canadarm 2. The MBS will be installed on the Mobile Transporter to complete the Canadian Mobile Servicing System, or MSS. In addition, Expedition 5 is traveling on mission STS-111 to the International Space Station to replace the current resident crew, Expedition 4, who will return to Earth with the STS-111 crew