A range of threats in the areas of safety and security, from natural disasters to terrorism to conventional warfare, involve complex interactions that are beyond the scope and capabilities of traditional problem solving techniques. ""Applications of Information Systems to Homeland Security and Defense"" provides an overview of complex systems' techniques and presents both guidelines and specific instances of how they can be applied to security and defense applications. In today's uncertain times, these techniques can provide a breakthrough in the capability to model, plan and respond to critical events in modern society. ""Applications of Information Systems to Homeland Security and Defense"" is a must read for anyone who is interested in the areas of security and defense, as well as for undergraduate and postgraduate students who are eager to learn about the applications of complex adaptive systems to real-life problems.