Dr. Gary M. Shiffman is Professor and the Director of Homeland Security Studies at the Center for Peace and Security Studies, School of Foreign Service, at Georgetown University, and Managing Director of the Chertoff Group. An economist, he focuses his academic and professional energies on innovative approaches to national and homeland security challenges.

Previously he served as Senior Vice President and General Manager of a critical infrastructure protection and emergency management business unit at L-3. He has also served at the U.S. Department of Homeland Security in the Senior Executive Service (SES) as Chief of Staff at U.S. Customs and Border Protection and in the U.S. Senate as a National Security and Senior Policy Adviser.

He is a decorated military veteran, having served in policy, planning, and operational positions in the U.S. Department of Defense.