The U.S. Dept. of Homeland Security (DHS), the U.S. Dept. of Agriculture (USDA), and the Food and Drug Administration (FDA) are sufficiently concerned about potential terrorist threats to agriculture and food processing that they have devoted significant portions of their recent budgets to various aspects of the issue. It is well-known that inadvertent contamination of food already causes significant numbers of cases of disease and death each year. What if someone maliciously sabotages our food?…