has sub-organization Air Force Research Laboratory Assistant Secretary of Defense for Health Affairs Central Intelligence Agency Congressionally Directed Medical Research Programs Cyber Defense Agency (United States) Defense & Veterans Center for Integrative Pain Management Defense Advanced Research Projects Agency Defense Human Resources Activity Defense Information School Defense Information Systems Agency Defense Intelligence Agency Defense Logistics Agency Defense Security Cooperation Agency Defense Technical Information Center Defense Threat Reduction Agency Joint Interoperability Test Command Military Health System Missile Defense Agency National Geospatial-Intelligence Agency National Security Agency Office of the Secretary of Defense Small Business Innovation Research Strategic Environmental Research and Development Program United States Air Force United States Army Aeromedical Research Lab United States Army Corps of Engineers United States Army Medical Research Institute of Infectious Diseases United States Department of the Air Force United States Department of the Army United States Department of the Navy United States Military Entrance Processing Command United States Secretary of the Army Walter Reed National Military Medical Center