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The prison looked more like the campus of a community college than a place where men were kept in cells for ten years or longer for offenses committed while wearing the uniform of their country.  There were no guard towers, but there were two staggered twelve-foot-tall security fences, armed patrols, and enough surveillance cameras to keep an electronic eye on virtually every millimeter of the place.  Situated at the northern end of Fort Leavenworth, the United States Disciplinary Barracks sat next to the Missouri River on nearly forty acres of rolling, forested Kansas acres, a mound of brick and razor wire cradled by a green hand.  It was the only maximum security military prison for males in the country.
-David Baldacci,  The Escape