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U.S. Navy unveils high-speed rail gun

Name: U.S. Navy unveils high-speed rail gun
Uploaded: 2014-04-08T07:43:00-0400
Duration: 2 min 35 s
Description: The U.S. Navy has unveiled a new secret weapon that its developers call a rail gun. Its projectile can travel at seven times the speed of sound and could potentially change the way America fights wars. David Martin reports.

The U.S. Navy has unveiled a new secret weapon that its developers call a rail gun. Its projectile can travel at seven times the speed of sound and could potentially change the way America fights wars. David Martin reports.