Lockheed Martin to Build World's Most Powerful Laser Cannon

For more than a decade, Lockheed Martin (NYSE: LMT) has been building laser guns for the U.S. military.

Lockheed has put gigantic lasers on airborne Boeing 747s. Experimented with lasers on smaller fighter jets. Helped the Army develop lasers to defend against drones.

And now, Earth's biggest defense company wants to build the biggest laser gun in the whole wide world.