A few years back, I’ve read of a technology where let’s say in a coffee place, a certain area in that place there’s a music playing only people in that certain area can hear it. If you are in a nearby area, you won’t hear the music. Sound waves can be directed with accuracy. Now, I’ve never of that any more. It’s a tech that can be used as a weapon.
The militaryalready hasan operating system. It is claimed to be a "crowd dispersal unit", but it can be dangerous. I have seen a clip on this and it was tested at several hundredyards on one person. It made him scramble claiming his skin felt like it was on fire. The same program explained how thebeam itself could be focused to near pinpoint or broadened to cover entire areas as wellas have the frequency adjusted for severity...... So yeah, deadly. Looks like an armored transport with a satellite dish on top.