The top military official responsible for defending U.S. and Canadian airspace is lobbying for the two nations to invest in an advanced, next-generation sensor system capable of seeing beyond the horizon and detecting a wide range of threats -- from large bombers to small, unmanned aircraft -- advocacy that is likely to influence future plans to replace NORAD’s centerpiece radar network: the North Warning System (NWS). Gen. Glen VanHerck, commander of the binational North American Aerospace and Defense Command and...
