Lasers have entered the arms race. As more nations equip their militaries with high-energy laser weapons, new defences are needed. Enter Helios, an anti-laser laser that aims to protect drones and other vehicles. Laser weapons have been around for a few decades, but they are becoming more widely used. The US military has large numbers of lasers that it can use to dazzle the enemy, for example. And its warship USS Ponce now carries lasers powerful enough to shoot drones out of the sky.
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