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Photos

Snapshots of what’s happening in the Defense Department.

An engineer works on a hypersonic vehicle.

Model Test

An engineer prepares to test a model of a hypersonic vehicle at NASA's Langley Research Center, Md., Dec. 10, 2009.

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  • Credit: NASA's Langley Research Center VIRIN: 091210-O-ZZ999-003M.JPG
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