This box-to-box exercise is for referees. The referee starts near the sidelines, in the extension of the penalty area line. On both sides of the field of play starts 1 person. Both run 75m to the other penalty area in 15 seconds and turn back immediately. They end on the penalty mark on the side where they started.
There are monitors where they can watch a clip and where they have to make a technical and disciplinary decision.