This feed is no longer being updated, please use the new URL: https://www.chds.us/ed/items/category/viewpoints-in-homeland-defense-and-security/feed The NPS Center for Homeland Defense and Security has been a pioneer in the development and delivery of graduate and executive level HS education since 2002.In these Viewpoints, the nation's HS leaders give opinions on current issues and challenges facing the country, such as intelligence and information-sharing, critical infrastructure protection, borders and immigration, terrorist groups, and interoperability.