The Gulf War era world, where a small professional force using expensive high-tech gadgets could win a war without the enemy being able to fight back, is gone. Today you still need the small high-tech force to win, but you also need a larger cost-effective force for defense.
A guy got close enough to shoot at and almost kill a Presidential candidate during the last election -- imagine how different things would have been if he had just used something like this[0] instead.
The first time someone attacks an outdoor music festival with drone strikes like that asshole who shot up that concert in Vegas is going to change society for the worse. :-/
[0] https://www.youtube.com/watch?v=qrZ1aH5gtMU&pp=ygUVd29ybGQnc...
The US military has used microphone arrays and radar as well to determine the trajectories of local threats, from snipers to field artillery.
Probably next would be "lasers" to disable any threats.
Styropyro and Tech Ingredients both have had youtube videos on high powered lasers.
>Ukraine Using Thousands Of Networked Microphones To Track Russian Drones
https://www.twz.com/land/thousands-of-networked-microphones-... (2024)
That particular attack against Russian bombers was done by undercover saboteurs working deep inside enemy territory. The drones being discussed here are essentially cheap cruise missiles. For example, you have a ~200 kg drone carrying a ~50 kg warhead that is launched using a rocket booster and capable of flying 1000+ km. In Ukraine and Russia, 80-90% of such drones are routinely intercepted by cost-effective air defenses.
I mean, at that price, I'm sending a wave every week and see what hits.
Army singular. There is one army on the planed doing that right now and trump hates its leader thus didnt even ask for help with eventual drone defense.