Radar Detectors.

I have a cheap cobra, it works fine. I can pickup the beeps half a mile before I see anyone. Also I picked up a laser signal once , way before he was aiming it at me, the beam must of sweeped my vehicle while he was targeting another car. I know 3 officers that live in my area personally , and only one can work the laser equipment correctly. The young guy is good, but the two older guys couldn't hit a building with it.