This is just silly on so many fronts. It’s completely useless in even partially inclement weather. It doesn’t work at night. They don’t actually show it tracking “stealth” craft with other aircraft or even birds in the picture (at least for the portion of video I was willing to watch).

Even if this does spot them, so what? You aren’t mounting this onto a rocket to shoot them down. Knowing a plane is approaching 30 seconds before it gets to you is almost completely useless unless you’ve got a fireman’s pole into your bomb shelter and the plane happens to not be carrying bunker busters as a payload.