A requirement exists (1) to define/assess physical security threats to the small ICBM hard mobile launcher (HML) as posed by terrorist and paramilitary groups ADN (2) to counter against these threats. Threat definition characterizes potential threats based on a review of existing documents which summarize past terrorist activity. Threat considerations range from theft to destruction. Characteristics include likely number of people per group, types/capabilities of weapons, types of tools/demolition equipment, kinds of transportation, methods/tactics of operation, and day/night operations. Based on our results, methods will be recommended to assure high level of protection against these threats at a reasonable cost. Emphasis will be on developing new, cost-effective physical security concepts including shields, intrusion sensors, electronic/laser fences, operational procedures, etc. The outcome of this study will be the recommendation of several original, innovative concepts, in descending order of priority, for developing during phase II of this program.