Space Shuttle Atlantis lifts off on the 109th shuttle flight, an 11-day mission to add the integrated truss “backbone” to the International Space Station. In addition to assembling and attaching this major part of the station, a mobile transport is added for the station’s remote manipulator arm, allowing the arm to roll from one end of the station to the other for whatever functions may be required. Aboard Atlantis for her 25th flight are Commander Michael Bloomfield, Pilot Stephen Frick, and mission specialists Jerry Ross, Steven Smith, Ellen Ochoa, Lee Morin and Rex Walheim.
