Sarah Sewall teaches international affairs at the Harvard Kennedy School of Government, where she also directs the Program on National Security and Human Rights. She led the Obama Transition's National Security Agency Review process in 2008. During the Clinton Administration, Sewall served as the first Deputy Assistant Secretary of Defense for Peacekeeping and Humanitarian Assistance. From 1983-1996, she served as Senior Foreign Policy Advisor to Senate Majority Leader George J. Mitchell on the Democratic Policy Committee and the Senate Arms Control Observer Group. Before joining Harvard, Sewall was at the American Academy of Arts and Sciences where she edited The United States and the International Criminal Court (2002). Her more recent publications include the introduction to the University of Chicago Edition of the U.S. Army and Marine Corps Counterinsurgency Manual (2007) and, with John White, Parameters of Partnership: U.S. Civil-Military Relations in the 21st Century (2009). She is a member of the U.S. Department of Defense's Defense Policy Board Advisory Committee and the Center for Naval Analyses Defense Advisory Committee. She graduated from Harvard College and Oxford University as a Rhodes Scholar.

In 2007, Sewall founded the MARO Project to create a military concept of operations for intervening to halt mass atrocity.

Sally has over a decade of experience working in the field of conflict prevention and resolution, with half of that time spent in Africa. She has worked for Search for Common Ground, the Fondation Hirondelle, Refugees International, International Crisis Group, and Oxfam GB. She has extensive field experience as a program manager, policy adviser, analyst and advocate, particularly with regards to the conflicts in the DRC, Sudan, Chad and the Horn of Africa. Sally's research and publications have focused on conflict-related displacement and humanitarian responses, regional and international peacekeeping capacities, small arms and light weapons, protection of civilians, and drivers of conflict. She is on the Board of Directors of Ushahidi, a project which uses crowdsourcing to map crises internationally. Sally is a graduate of Swarthmore College and has an MSc in Comparative Politics, with a focus on conflict and genocide early warning, from the London School of Economics.

Graham Ball is the Mass Atrocity Response Operations Project's assistant and event organizer. Before coming to The Carr Center he worked for Harvard Medical School with doctors and philosophers involved with Medical Ethics and Bioethics. He holds a B.A. in International Studies with a focus on Political Science and International Development from Michigan State University. Graham’s interest in mass atrocity response and policy developed during his time stationed in Europe while enlisted in the U.S. Air Force prior to attending college.

Colonel (Ret) Raymond is a Doctrine and Concepts Analyst at the Peacekeeping and Stability Operations Institute (PKSOI) in Carlisle, PA. Prior to this appointment Colonel (Ret) Raymond served on the faculty at the US Army War College. From 2006-2007 Colonel (Ret) Raymond was the MiTT Chief of an Iraqi Army Brigade in Ninewah Province; he has also spent several years serving in Korea including working as the Chief of Plans for Combined Forces Command/United Nations Command. A former infantry officer, Colonel (Ret) Raymond is a graduate of the United States Military Academy, the School of Advanced Military Studies, the US Army War College, and other institutions. He is married with two children.