Laser weapons are slowly becoming a reality, if not a practical one. Long the provenance of sci-fi movies, a laser weapon almost seems an inevitable part of a future military, but current power and size limits have kept them in the lab for the most part. But Lockheed Martin may have figured out a way to solve many of lasers' issues with an inverted prism.
The laser they've developed produces 100 kilowatts or more of power, and uses fiber optics to produce near-perfect beams, something that's been a struggle to maintain over long distances. It does this by working like an inverse prism: "lasers with slightly different wavelengths enter a combiner, and the result is a single, focused beam. It's called Spectral Beam Combining."
So if in 10 years you start hearing about new supersoldiers armed with spectral beam rifles, you'll know where it all started.