R. William Johnstoneserved on the staff of the 9/11 Commission, after working for over 20 years as a Congressional staff member. He is the author of 9/11 and the Future of Transportation Security (PSI, 2006) and Bioterror: Anthrax, Influenza, and the Future of Public Helth Security (PSI, 2008). Johnstone is a consultant on homeland and national security matters.
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