1. Research Scientist, DNA Analyst, Administrator, and Chief, respectively. The Armed Forces DNA Identification Laboratory. The Armed Forces Institute of Pathology, 14th and Alaska Sts. Washington, DC 20306-6000, US.
2. Postdoctoral Fellow and Chief, respectively, The Laboratory of Biochemical Genetics, The National Institutes of Mental Health, Neuroscience Center, Washington, DC, US.
3. Forensic Anthropologist, The Office of the Armed Forces Medical Examiner, The Armed Forces Institute of Pathology, Washington, DC, US.