The USS Preble is the only U.S. destroyer armed with the HELIOS, which can fire laser beams to destroy fast attack craft and drones.

The water vapor around your ears — and there is almost always some — absorbs the laser and generates sound. The team used both a modulated beam and a pulsed beam. In the pulsed beam case ...

Scientists have developed a method for generating fast, bright proton beams using a high-repetition-rate laser-plasma ...