RE:RE:RE:RE:RE:RE:Use of radar and the effects of empI didn't get the impression that I would receive further emails as the info I passed on was from a couple of emails exchanged on the same day. I agree that if a location has a security force and knows the location, which I was told could be wall, ceiling or floor, could manage to keep workers or others at a safe distance. The promo though suggests sites such as schools, hospitals etc which may not have a budget or might refuse the extra costs of such on going supervision.