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Testimony before the Subcommittee on Personnel, Committee on Armed Services, United States Senate
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Testimony before the Subcommittee on Space and Aeronautics, Committee on Science, U.S. House of Representatives
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Testimony before the Subcommittee on VA-HUD and Independent Agencies, Committee on Appropriations, United States Senate
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Testimony before the Committee on Agriculture, Nutrition, and Forestry, United States Senate
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Testimony before the Committee on Finance, United States Senate
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Testimony before the Committee on the Budget, United States Senate
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