Today's security professionals face a myriad of threats and hazards unimaginable just two short decades ago. This dilemma is compounded by advancements in technology and an increasingly complex threat environment from a wide array of natural, man-made, and technological threats and hazards to people, property, the global economy, critical infrastructure, and computer systems, to name just a few. These threats have taken on a global nature with great interconnectivity, interdependency, and an increasing flow of goods, people, and services across borders. Security professionals charged with analyzing risk and implementing well-considered policies face exceptional challenges in dealing with this complex security environment. In addition, decision-making must comply with their nation's unique legal, political, and social framework. An understanding of the global dynamics undergirding these issues requires a multidisciplinary approach that explores this reality. This reality has created a demand for a new generation of highly educated leaders in both the private and public sectors of the Homeland Security Enterprise, as well as academics who will teach the next generation of security professionals and conduct innovative research in the field.