There is a revolution going on in military hardware that first caught the public eye in the fighting between Armenia and Azerbaijan over the Nagorno-Karabakh region: once (but no longer) inhabited by Armenians, claimed by Azerbaijan. Cheap Azeri drones dominated the battlefield, Armenia had no effective response.
An Australian source - The Strategist - has a good article about the various ways this new tech works cheaply, and can be countered, often at prohibitive cost. It is all about cheap new tech defeating older expensive high tech, particularly with swarms on offense defeating static defense.
Of particular interest is the use of this new, cheap tech to kill individual human targets. The Secret Service had better be taking it seriously. Other security units charged with protecting high-value individuals should likewise take note. I’m imagining future protection details including highly skilled skeet shooters carrying repeating shotguns.
The seesaw back and forth between offense and defense continues. Today offense is winning.