(02/01/2002) -- As part of Terminal Countdown Demonstration Test activities, the STS-109 crew practices emergency exit from the Shuttle. Leading the way to the slidewire basket is Mission Specialist James Newman, followed by Michael Massimino and Richard Linnehan. The TCDT also includes a simulated launch countdown. STS-109 is a Hubble Space Telescope Servicing Mission, with goals to replace Solar Array 2 with Solar Array 3, replace the Power Control Unit, remove the Faint Object Camera and install the Advanced Camera for Surveys (ACS), install the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) Cooling System, and install New Outer Blanket Layer insulation. The 11-day mission will require five spacewalks to perform the tasks. Launch of STS-109 aboard Space Shuttle Columbia is scheduled for Feb. 28, 2002