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Chapter 5: Common USFS Threats 49 Table 9. Hypothetical relative vulnerability of security areas to acts of force. (Comparisons valid only within each column.) Act of Force Delivery Mode LOCATION To: By: Facility Vessel Vehicle Vessel Overhead 1. Beyond Site Boundary L N/A L N/A L 2. Facility Perimeter L N/A H N/A L 3. Vehicle Parking M N/A H N/A L 4. Vehicle Holding M N/A H N/A M 5. Passenger Waiting Area H N/A M N/A H 6. Terminal Operations H N/A M N/A M 7. Adjacent to Ferry (Shore-side) H M M N/A M 8. Adjacent to Ferry (Water-side) M H N/A H M 9. On-Board (Non-restricted) N/A M* N/A** N/A L 10. On-Board (Restricted) N/A H* L** N/A L 11. In Transit N/A M N/A H L H = high; M = medium; L = low; and N/A = not applicable mode for this security area. * Assumes that navigational controls are in restricted areas. ** Assumes that on-board cargo area, including vehicle storage, is restricted. restricted to assisting in determining the number of preventive measures installed in each area on a specific threat or delivery mode basis. Such an analysis should not be used to assess the exten- siveness of preventive measures between threat types or delivery modes. 5.4 Chemical, Biological, and Radiological (CBR) Agents Many forms of CBR agents may be used to threaten the USFS. Although the effects of these agents vary greatly, as do the detection measures, the areas in which they may be released and the relative vulnerability of these areas may be quite similar. CBR agents may be delivered by active or passive modes, as described below. · Active delivery--a release that can be quickly recognized, although the type of agent may not be immediately known. Examples of active delivery include colored or odiferous gases or liq- uids leaking from a container in a monitored area or from the HVAC system, and a CBR agent released during an explosion. In these examples, tests for CBR agents may be quickly con- ducted to determine at least the general type of release agent, although detailed identification may take up to several days. · Passive delivery--a release that cannot be quickly recognized, such as the release of a non- odiferous agent through the HVAC system; release of a tasteless, colorless agent in the water supply; or another means of general dispersal of an agent that cannot be detected by sight, taste, or smell. Table 10 shows hypothetical relative vulnerabilities among security areas for active and passive releases of CBR agents. As with Tables 8 and 9, analyses such as that presented in Table 10 should be used only to assist in determining the number of security measures installed in each area for a specific threat delivery mode. Such analyses should not be used to assess the extensiveness of
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50 Part II: Characteristics of the U.S. Ferry System Table 10. Hypothetical relative vulnerability of security areas to CBR agents. (Comparisons valid only within each column.) CBR Delivery Modes LOCATION Chem Bio Rad 1. Beyond Site Boundary L L L 2. Facility Perimeter M M M 3. Vehicle Parking M M M 4. Vehicle Holding H H H 5. Passenger Waiting Area H H H 6. Terminal Operations M M M 7. Adjacent to Ferry (Shore-side) M M M 8. Adjacent to Ferry (Water-side) M M M 9. On-Board (Non-restricted) H H H 10. On-Board (Restricted) H H H 11. In Transit M M M H = high; M = medium; L = low; and N/A = not applicable mode for this security area. security measures between threat types or delivery modes. The relative vulnerabilities among secu- rity areas in Table 10 are for the initial release of a CBR agent within the ferry system. These vul- nerabilities may not vary among CBR agents; however, CBR agents have been retained as separate columns for better assessment of particular scenarios that may develop, such as a CBR attack out- side the USFS that may be transported through the ferry system. Notes 1. Guidance on Risk Analysis and Management for Critical Asset Protection: Asset Application Handbook, Proto- type for Chemical Process Industry, ASME, Draft, Page 42, July 30, 2004.