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170112-N-PO203-096
170112-N-PO203-096 DAHLGREN (Jan. 12, 2017) Rear Adm. David Hahn, chief of naval research, addresses the Electromagnetic Railgun team during a visit to Naval Surface Warfare Center, Dahlgren Division. (U.S. Navy photo by John F. Williams/Released)
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hypervelocity projectile
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,
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Dahlgen
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John Williams |
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