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PrefaceThis study was sponsored by the Office of Naval Research (ONR). It was initiated by Ivy Estabrooke and continued under Lee Mastrioanni, thrust manager, and Joong Kim, program officer, in ONR's Expeditionary Maneuver Warfare and Combatting Terrorism Department (Code 30). Comments and questions are welcome and should be addressed to Paul K. Davis at pdavis@rand.org.The report documents a basic research project. It is technical in nature and intended for researchers or managers of technical research potentially interested in information fusion for such domains as counterterrorism, law enforcement, and intelligence. Some of the ideas and methods will be of interest to the larger community of researchers involved with information fusion.This research was sponsored by the Office of Naval Research and conducted within the International Security and Defense Policy Center of the RAND National Defense Research Institute, a federally funded research and development center sponsored by the Office of the Secretary of Defense, the Joint Staff, the Unified Combatant Commands, the Navy, the Marine Corps, the defense agencies, and the defense Intelligence Community.For more information on the International Security and Defense Policy Center, see http://www.rand.org/nsrd/ndri/centers/isdp.html or contact the director (contact information is provided on web page).
Summary ObjectivesMilitary and other government organizations put substantial effort into detecting and thwarting attacks such as those by suicide bombers or involving improvised explosive devices. Such attacks may be against military or government installations in the United States or abroad, civilian infrastructure, or any of many other targets. An element of thwarting such attacks is observing suspicious individuals over time with such diverse means as cameras, scanners, and other devices; travel records; behavioral observations; and intelligenc...