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In preparation for the launch of Discovery on mission STS-120,

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the external tank's liquid oxygen feedline brackets were reinsulated with foam.

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External tank technicians traveled from the Michoud Assembly Facility in New Orleans,

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where the tanks are made, to NASA's Kennedy Space Center in Florida to conduct the work.

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Inside the giant Vehicle Assembly Building, the technicians carefully removed

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the foam and underlying cork insulation from the brackets.

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The work was necessary when cracks in the underlying cork insulation

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were discovered on the brackets during X-ray inspections.

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The inspections were prompted when foam lost from the same area struck

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Endeavour during its launch on mission STS-118 in August.

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The technicians reapplied the lightweight foam to the brackets without the

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underlying cork insulation to complete the corrective process.

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With the work finished, the external tank was joined to the twin solid rocket boosters,

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and preparations for Discovery's launch on mission STS-120 moved forward.