The past two years have seen signi?cant interest and progress made in national and homeland security research in the areas of information technologies, orga- zational studies, and security-related public policy. Like medical and biological research, which is facing signi?cant information overload and yet also trem- dous opportunities for new innovation, the communities of law enforcement, criminal analysis, and intelligence are facing the same challenge. As medical - formatics and bioinformatics have become major ?elds of study, the science of intelligence and security informatics is now...