Dr. William R. Graham is Chairman of the Commission to Assess the Threat to the United States from Electromagnetic Pulse Attack. He is the retired Chairman of the Board and Chief Executive Officer of National Security Research Inc. (NSR), a Washington-based company that conducted technical, operational, and policy research and analysis related to US national security. He currently serves as a member of the Department of Defense’s Defense Science Board and the National Academies Board on Army Science and Technology. In the recent past he has served as a member of several high-level study groups, including the Department of Defense Transformation Study Group, the Commission to Assess United States National Security Space Management and Organization, and the Commission to Assess the Ballistic Missile Threat to the United States. From 1986–89 Dr. Graham was the director of the White House Office of Science and Technology Policy, while serving concurrently as Science Advisor to President Reagan, Chairman of the Federal Joint Telecommunications Resources Board, and a member of the President’s Arms Control Experts Group.