Over the last ten years, there has been growing concern about potential biological attacks on the nationa (TM)s population and its military facilities. It is now possible to detect such attacks quickly enough to permit treatment of potential victims prior to the onset of symptoms. The capability to a oedetect to warna, that is in time to take action to minimize human exposure, however, is still lacking. To help achieve such a capability, the Defense Threat Reduction Agency (DTRA) asked the National Research Council (NRC) to assess the development path for a oedetect to warna sensors...