Homeland Security Affairs is the peer-reviewed online journal of the Naval Postgraduate School Center for Homeland Defense and Security (CHDS), providing a forum to propose and debate strategies, policies, and organizational arrangements to strengthen U.S. homeland security. The instructors, participants, alumni, and partners of CHDS represent the leading subject matter experts and practitioners in the field of homeland security.February 2007. The articles in this issue of Homeland Security Affairs demonstrate the arc of homeland security studies – from how we think about and address terrorism to how we communicate with one another when dealing with the immediate aftermath of a terrorist attack or natural disaster. Illustrating the arc tho...