(04/24/2000) --- In the Operations and Checkout Building, STS-101 Mission Specialist Jeffrey N. Williams smiles after suiting up as he waits to head to Launch Pad 39A and launch of Space Shuttle Atlantis. The mission will take the crew to the International Space Station to deliver logistics and supplies and to prepare the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000. Also, the crew will conduct one space walk. This will be the third assembly flight to the Space Station