Free Talk Live

(Dec. 14) -- The world's most powerful gun is one step closer to becoming the super-weapon of the future.

The Navy on Friday demonstrated a record-setting 33-megajoule shot from its developmental electromagnetic rail gun, a weapon that will be able to shoot farther than conventional guns. This weapon of the future could someday go on U.S. Navy ships, but for right now, it's a science and technology project.