“...a “virtual wall” of surveillance technology makes a lot more sense. It’s already in wide use and expanding...”
And really working so well, huh????? *ROFL*
Microwaves and data links are bitch. Towers sway and processing systems that depend on stability at microwave frequencies, coupled with radar (basically) data processing of crude means didn’t work.
“...a “virtual wall” of surveillance technology makes a lot more sense. It’s already in wide use and expanding...”
Agree, LOL! With a virtual wall, we can have the pleasure of GETTING TO WATCH hoards of Illegals come across in 3D!!! Quite a show, getting to watch your own country being invaded, and with STEREO SOUND!!!