Book excerpt: In this provocative look at the US military from the Persian Gulf War through the 2003 invasion of Iraq, investigative journalist Gary Matsumoto contends that an anthrax vaccine dispensed by the Department of Defense was the cause of Gulf War Syndrome and the origins of a massive cover-up. Matsumoto calls it the worst friendly-fire incident in military history. A skillfully-woven narrative that serves as a warning about this man-made epidemic, Vaccine A is a much needed account of just what went wrong, and why.