Laser guns are real now. Actual militaries are deploying actual lasers in actual combat. "This is a technology that has been under development for decades," [said] Iain Boyd, an aerospace engineer. "And it's only really now just really starting to enter the public view." The Army has outfitted trucks with anti-drone lasers, and the Air Force has added ground-based lasers to its arsenal. Russia, China, and the United Kingdom are all developingand in some cases already deploying"laser weapons, and last year, Israel became the first country to use a laser in combat to destroy a drone. The very real lasers now being deployed on battlefields around the world have some notable differences from most of their science-fictional forebears. They're silent, for one thing"no pew pew sound effects"and the beam they produce is invisible. Real lasers have a number of other advantages. $13 a shot is pretty good compared with the Navy's standard missile interceptors, which cost $2 million apiece. Another advantage of lasers is that they just keep going. Last year, Chinese scientists successfully beamed a precision non-weapon laser all the way to the moon. But infinite range is also a drawback. If a laser missed a drone, Boyd said, the beam could continue for hundreds of miles and hit, say, a commercial airliner. Even if a laser beam did hit its target, Boyd said, its light could still scatter and cause all manner of collateral damage.