We have wig wags only come on in stage three. The reason they did it this way was to allow for solid head lights to the front for officer safety, yet you still had emergency lights to the front without the wig wags throwing distortions into the suspect contact. We found it was worse with strobes going off if it turned into a lethal confrontation. We tested this idea on the range and had officers shoot anywhere from 10-60 points less for that qualification.