Let's start with planes. The Defense Advanced Research Projects Agency (DARPA) is experimenting with mounting laser cannons on planes, if for no other reason than to give those awful people who shine laser pointers at airborne planes a taste of their own medicine. But then again, when you think about it, pilots are such a thing of the past. Drones are the future. We've already put bombs and machine guns on them, why not lasers? Recently U.S. Air Force captain and drone pilot Michael Byrnes explained in a military magazine how unmanned laser drones could be the future of aerial dogfighting. So, soon every air battle will be like Top Gun, but if Maverick was a robot and the planes burned up mysteriously because technically you won't even be able to see the laser.
But what if we create this technology and it falls into enemy hands? Simple: Just equip Hummers with anti-drone lasers. That way when our creation comes back to kill us like some Frankenstein monster made out of pure energy, we can take it out with EVEN MORE LASERS.
Office of Naval Research
Then there is the ultimate prize, the ray gun we have all wanted since we were children. DARPA is working on making this seemingly impossible goal a reality by slowly shrinking available laser technology in their totally awesomely named Excalibur program.