Published on Apr 8, 2014
PROVIDED BY cnnnext.com
The U.S.
Navy has unveiled a new secret weapon that its developers call a rail gun.
Its p
...
Published on Apr 8, 2014
PROVIDED BY cnnnext.com
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.
