All posts are organized essentially the same. The person in charge is called the corner captain. He or she directs the assignments of workers to such duties as flagging, incident response, and communications. The corner captain determines the section of track that the crew will maintain and coordinates this with corner stations “upstream” and “downstream” of race traffic direction. He or she assures that the communication link is working; that corner equipment (see below) is complete, functional, and properly distributed; that all guard rails and barriers are intact; and that the track is free of obstacles and is “ready to race”. He or she coordinates with any emergency response vehicles in the area; assures that the station and surrounding area is kept free of press personnel and irrelevant officials; is responsible for keeping visiting personnel out of danger areas; and warns officials of any problems in the spectator areas like illness, altercations, or unsafe conduct.