Xona CEO Brian Manning explains why losing GPS would disrupt financial markets, power grids, and phone networks, even if nobody needed directions: "All of our financial infrastructure, all of our power grids, all of our telecom infrastructure use GPS for timing." "When you make a trade between New York and Japan, the way those are timestamped is using GPS. When your cellphone hands off from one tower to the next, it’s all using GPS timing." "As you start to see these timing disruptions, a…