1. WMD Threats and Aerosol Science, Sandia National Laboratories, Albuquerque, New Mexico, USA; National Strategic Research Institute, Omaha, Nebraska, USA.
2. University of Nebraska Medical Center, Omaha, Nebraska, USA; and National Strategic Research Institute, Omaha, Nebraska, USA.
3. Chemical & Biological Threat Detection & Countermeasure Development, National Strategic Research Institute, Omaha, Nebraska, USA.