US Navy Unveils High-Speed Rail Gun

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YouTube.com, published by CBS This Morning, Apr 8, 2014 (2:35 minutes)
www.youtube.com/watch?v=ygHN-vplJZg

Note: Electromagnetic Railgun: Fact Sheet. US Office of Naval Research, undated
www.onr.navy.mil/media-center/fa ... gnetic-railgun.aspx
(The Electromagnetic Railgun INP [standing for 'Innovative Naval Prototype '] was initiated in 2005; launching a 100-nautical mile projectile)

No explosive is needed, destroying a target (airplane, warship or missile) by kinetic force. Costs about $25,000 compare to that of a missile (more than a million dollars used in anti-missile tests).