STS-121 
Rollover to the VAB & Rollout to Pad 39B


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May 12, 2006, Discovery was moved from Orbiter Processing Facility Bay 3 to the Vehicle Assembly Building, a major step toward a launch to the International Space Station.

On May 19, the crawler transporter carrying Space Shuttle Discovery left the Vehicle Assembly Building at 12:45 p.m. on its 4.2-mile journey to Launch Pad 39B and arrived nearly eight hours later.

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Making the turn, Discovery is aligned with the centerline of the Main Transfer Aisle in the VAB Discovery is rolled into the VAB Stephanie Stilson, Discovery's Operations Flow Manager, is interviewed
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Leaving the VAB, Discovery heads to Pad 39B A profile of the Orbiter-Booster stack
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Discovery proceeding to Pad 39B Engine Room Technician for the crawler watches as Discovery is moved to Pad 39B Dwarfed by the Main Engines, Wayne Hale, Shuttle Project Manager, inspects the Orbiter Discovery