Security employees on Copenhagens automatic light rail metro system have leaked a report detailing corrosion damage to tracks and cables caused by seepage of seawater and sewage into the predominantly underground network. The February report, which provides a detailed description of disasters waiting to happen, has yet to be made public by the restad Development Corporation responsible for the metro. Among the potential dangers listed are loosened tracks due to corroded rail ties, which could cause trains to derail, and paralysis of the computerized steering and train location system through water damage to cables. The first two sections of the fully automated driverless metro system in Copenhagen were opened in October 2002. The third phase, which is to run from Lergravsparken to Copenhagen Airport, is scheduled to open in 2007.