Frank R. Spellman is a retired assistant professor of environmental health at Old Dominion University, Norfolk, VA, and author of over 155 books. Spellman has been cited in more than 400 publications; serves as a professional expert witness and incident/accident investigator for the U.S. Department of Justice and a private law firm; and consults on Homeland Security vulnerability assessments (VAs) for critical infrastructure, including water/wastewater facilities nationwide. Dr. Spellman lectures on sewage treatment, water treatment, homeland security and health and safety topics throughout the country and teaches water/wastewater operator short courses at Virginia Tech (Blacksburg, VA). He holds a BA in public administration; BS in Business Management; MBA; Master of Science, MS, in environmental engineering; and a PhD in environmental engineering.