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Crew members in training for the STS-73/U.S. Microgravity Laboratory-2 (USML-2) mission pose for a photograph inside the Spacelab module during the Crew Equipment Integration Test (CEIT) at the Operations and Checkout Building. The crew includes, from left, Payload Commander Kathryn Thornton, Payload Specialist Albert Sacco, Alternate Payload Specialist R. Glynn Holt, Payload Specialist Fred Leslie, Alternate Payload Specialist Dave Matthiesen, and Mission Specialist Catherine Coleman. The extended- duration Shuttle mission is targeted for liftoff in September aboard Columbia.