Original sentence: A World Cup downhill, for example, requires a team of several hundred course workers that may spend over two weeks preparing a course prior to a week of racing, during which the course workers will maintain the course.Course workers include a Chief of Course and erect safety systems (usually nets), prepare and maintain the surface of the race course, erect and maintain other equipment such as start and finish areas and the gates through which competitors must pass, and remove fresh snow that may fall during the event.Most venues of major alpine ski races have a local ROC which remains in place from year to year
Edited sentence: A FIS World Cup downhill, for example, requires a team of several hundred course workers that may spend over two weeks preparing a course prior to a week of racing, during which the course workers will continue to maintain the course.Most regular venues of major alpine ski races have a local ROC which remains in place from year to year.Under the leadership of a Chief of Course, course workers erect safety systems (usually nets), prepare and maintain the surface of the race course, erect and maintain other equipment such as a start tent, a finish area and the gates through which competitors must pass, and remove any fresh snow that may fall during the event