Among the leading concerns surrounding Homeland Security in the United States is Critical Infrastructure Protection (CIP). Identifying, prioritizing, and providing for the protection of infrastructure so vital to the United States that its incapacity or destruction would have a debilitating impact on security, national economic security, national public health or safety, or any combination of those matters is one of the most compelling issues facing the Department of Homeland Security, its interagency partners, state and local governments, and the private sector. On 25 May 2004, the Army War College's Center for Strategic Leadership hosted a senior symposium dedicated to examining the United States' evolving strategies for the protection of critical infrastructure and key assets in our country. The forum brought together a distinguished panel of seven retired generals and senior civilian officials, from both the public and private sectors, all actively involved in homeland security issues. The immediate intent of the symposium was to gather insights on the directions taken by these strategies for use in future studies, wargames and syllabus development addressing the changing face of homeland security. At the same time, the Center hoped to use the insights as a springboard for an expanded symposium on CIP, In Support of the Common Defense, which took place at Collins Hall on from 25-26 August. By extension, the War College hoped to contribute in the search for the surest path to the inherently complex end of critical infrastructure protection.