Over 2,200 people were needed to provide all the services for the press, officials and athletes at the Games. These services included sanitation, security, and care of the venues. Accommodating the influx of people into St. Moritz was a difficult task for the organizing committee. It was complicated by the mountainous region in which the community was situated. A massive project to improve the village's transportation infrastructure had to be completed prior to the Games. This included building and widening roads for vehicular traffic. Several train stations were built to accommodate the increased demands for public transit. They also had to increase the capacity of the city's sewers. All of the projects had to be approved by the Swiss government, and justified by its impact on the success of the Games. To aid the organizing committee the IOC demanded that all participating nations provide lists of their athletes several months prior to the Games. Consequently, the Swiss knew exactly how many athletes and officials to plan for.