Watch Navy's New Supergun Launch Shells at 5600 Mph

May 7 (Bloomberg) –- The Navy's newest super gun is a long range weapon that uses electromagnetic "Star Wars" technology. It launches projectiles that use speed, not explosives to do damage. Firing at 7 times the speed of sound, it can punch through 3 walls of reinforced concrete and costs a fraction of the price of a conventional Navy missile. (Source: Bloomberg)