I think the "may" in the title above can be replaced by "are not" secure. Security was just not a planning factor, especially anything to do with the digital or remote actioning of the system. I believe the planning assumptions for all older warning systems should start with, "Our system is not secure and we need to make it secure."
Eric Holdeman is a contributing writer for Emergency Management magazine and is the former director of the King County, Wash., Office of Emergency Management.