 and avoid closed areas for their own safety so that they are not interfering with the training and the safety of the participants of that repeller recertification. About how many are going to participate in the training? We're expecting that about 10 spotters will go through recertification, and then additional 50 repellers will also be engaged in that. So it will be a sizable training. When are repellers used? Because I've always heard of smoke jumpers.