It managed to land a sea-borne force north of the camp and cut off supply routes.

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Three years ago our sea-borne force managed an 8 megajoule blast, now its researchers have more than quadrupled that: 33 megajoules accelerating a projectile using magnets.

ENGADGET: Navy's prototype rail gun projectile hits mach 7 at 33 megajoules, our hearts skip a beat (video)

Sea-borne migration makes for dramatic television.

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