CAPE CANAVERAL, Fla. – In the White Room on NASA Kennedy Space Center's Launch Pad 39A, STS-128 Mission Specialists Patrick Forrester (left) and Christer Fuglesang wait for cool air to be pumped through their launch-and-entry suits before entering Space Shuttle Discovery. The White Room is at the end of the orbiter access arm and provides entry into the shuttle. Mission crewmembers are at KSC to take part in the terminal countdown demonstration test, or TCDT, which culminates in a simulated launch countdown inside the Shuttle.