The reason why this is not airplanes with freakin lasers on their noses is because the military controls those, and because there would be radar logs.
They don't need billion-dollar flying laser systems to do this. They can have one guy drive around along the back roads and occasionally toss a burning road-flares in the bushes. Would it be smarter to involve dozens of people on the ground and in the air, or use one guy with a car?