1. Phillip J. Tomezsko, PhD, is Technical Staff, Counter WMD Systems Group, MIT Lincoln Laboratory, Lexington, MA.
2. Casandra W. Philipson, PhD, was Technical Staff, MIT Lincoln Laboratory, Lexington, MA.
3. Matthew E. Walsh was Associate Technical Staff, Biological and Chemical Technologies Group, MIT Lincoln Laboratory, Lexington, MA.
4. Matthew E. Walsh is currently a PhD Student, Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD.