it is run by the survey in berkel berkeley, northern california. it dete detects it quickly. it is a warning the shaking is on the way. in this case people more than 10 miles away could hear the shaking is coming from it arrived. >> they are trying to build the system across the west coast to give people a chance to prepare but give the industry a chance to protect the quip aparted traffic contr -- equipment and control to make it safer. surgery and fire doors can open. the system i am sure is coming. the requequestion is how soon. if we have it we will figure out ways to take advantage of it. >> how worried are you about scrubbing turl dama-- structura damage you can't see? who goes out and says mr. and mrs. smith you have damage you are probably not aware of? army inger nears? /* -- engineers? >> cal tran goes out and looks at the highways and the train people go and look at their tracks, and they all know where the most vulnerable places are and where they have to look. but it takes time. over the next few days and wieks we will learn what the real damage of this earthquak