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STS-80 Mission Specialists Thomas D. Jones, at left, and Tamara E. Jernigan train in emergency egress procedures using a slidewire basket at Launch Pad 39B as part of the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. The STS-80 mission, the seventh and final Shuttle flight of 1996, will feature two spacewalks and the deployment, operation and retrieval of two scientific satellites, the Orbiting Retrievable Far and Extreme Ultraviolet Spectrometer- Shuttle Pallet Satellite-2 (ORFEUS-SPAS-2) and the Wake Shield Facility-3 (WSF-3). The mission will be conducted aboard the Space Shuttle orbiter Columbia.