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  • The STS-121 crew members exit the Operations and Checkout Building

    On the Move

  • Space Shuttle Discovery on Launch Pad 39B

    July 3 Mission Management Team Briefings

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  • The STS-121 crew stands together on the launch pad.

    Three to Go!

  • Discovery makes its way to the pad

    Rolling in the Right Direction

  • Payloads for the STS-121 mission arrive at the launch pad

    Payloads at the Pad