The ASN (ASNs - L'Autorite Sportive Nationale) will also nominate a clerk of the course, who works together with the FIA appointed race director to control the Formula One practice, qualification, and race events. They make sure that all trackside officials are at their posts and are capable of doing their job before each session, and they are responsible for starting and stopping the practice or race, stopping a non rule-abiding car, and sending out the safety car if things go wrong. The race director, clerk of the course, and chairman of the stewards are in radio contact at all times when the cars are on the track, and the clerk of the course must additionally be in radio contact with all the marshaling posts around the circuit.