(06/29/2001) -- On Launch Pad 39B, dressed in their launch and entry suits, STS-104 Mission Specialists (left to right) James F. Reilly, Janet Lynn Kavandi and Michael L. Gernhardt make their way from Space Shuttle Atlantis to the slidewire baskets, part of the emergency egress system at the pad. They and other crew members are taking part in Terminal Countdown Demonstration Test activities, which include the emergency egress training and a simulated countdown exercise. The launch of Atlantis on mission STS-104 is scheduled July 12. The mission is the 10th flight to the International Space Station and carries the Joint Airlock Module and High Pressure Gas Assembly