they have been tracking him ever since. now there are even apps to follow santa s progress on your phone. you can imagine that colonel was sitting there on christmas eve, 1955. cold war is going on. red phone rings and little kid says, where s santa? leah: where s santa? leland: he played along. my nieces they want to know where santa is. this is very cool app. leland: you can find out and see everything they use to track him. it is great. leah: check this out, a revolutionary new earthquake detection system in the works. for first time the u.s. geological survey is teaming up with the private sector to develop a an alert for earthquakes in your area possibly giving you time to take cover. will carr joins us from los angeles. how much warning can people expect to get? reporter: good morning, leah. it could be minutes. it could only be seconds. experts say any amount of time could potentially save thousands