Effective defense against chemical and biological threats requires an "end-to-end" strategy that encompasses the entire
problem space, from threat assessment and target hardening to response planning and recovery. A key element of the
strategy is the definition of appropriate system requirements for surveillance and detection of threat agents. Our end-to-end
approach to venue chem/bio defense is captured in the Facilities Weapons of Mass Destruction Decision Analysis
Capability (FacDAC), an integrated system-of-systems toolset that can be used to generate requirements across all stages
of detector development. For example, in the early stage of detector development the approach can be used to develop
performance targets (e.g., sensitivity, selectivity, false positive rate) to provide guidance on what technologies to pursue.
In the development phase, after a detector technology has been selected, the approach can aid in determining
performance trade-offs and down-selection of competing technologies. During the application stage, the approach can
be employed to design optimal defensive architectures that make the best use of available technology to maximize
system performance. This presentation will discuss the end-to-end approach to defining detector requirements and
demonstrate the capabilities of the FacDAC toolset using examples from a number of studies for the Department of
Homeland Security.
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