As a laser continues to fire in the exact same direction for an extended period, it heats up the air it passes through, which ultimately defocuses the laser beam. This isn’t a real issue when engaging ...

After earlier plans to take target practice on the Great Lakes with live ammunition met with public opposition, the U.S. Coast Guard is exploring a possible high-tech alternative. This week, Coast ...

Looking to push ahead in the scramble to develop laser weapons, Tucson-based Raytheon Missile Systems is developing a system to shoot down mortars and small missiles with bursts of laser light. And ...