1. Julie A. Layshock, PhD, is a Principal Research Scientist, Analytical and Environmental Chemistry Department, Battelle, Inc., Duxbury, Massachusetts. Brooke Pearson, PhD, is a Senior Scientist, Information Operations Division, Cubic Applications, Inc., Alexandria, Virginia. Kathryn Crockett, PhD, is a Senior CBRN Analyst, Chemical/Biological Analysis Center, The Tauri Group, Alexandria, Virginia. Michael J. Brown, PhD, Sheila Van Cuyk, PhD, and W. Brent Daniel, PhD, are Research Scientists; and Kristin M...