Navy Chief of Naval Operations Adm. Gary Roughead speaks at the electromagnetic railgun prototype live-fire demonstration at the Naval Surface Warfare Center Dahlgren Division in Dahlgren, Va., Jan. 31, 2008. Designed as a weapons platform for future Navy warships, the railgun uses electricity and magnetism to launch projectiles rather than chemical propellants. ( Navy photo by Mass Communication Specialist 1st Class Tiffini M. Jones) (Released) Navy Chief of Naval Operations Adm 080131-N-FI224-119

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Photo credit: © PJF Military Collection / Alamy / Afripics
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