One of the most significant trends of federal law enforcement in the last fifteen years has been its militarization. The logical, perhaps inevitable, consequence of that militarization was seen in the disaster at Waco, Texas, resulting in the deaths of four federal agents, and seventy-six other men, women, and children. In this article, we use the Waco tragedy as a starting point to examine the militarization of federal law enforcement, and similar trends at the state and local level. Part Two of this article sets forth the details and rationale of the Posse Comitatus Act--the 1878 law forbidding use of the military in law enforcement. Part Three explicates how that Act was eroded by the drug war in the 1980s. The article then discusses how...