Rain hammered against the floor-to-ceiling windows. The water droplets filtering Arlington's lights across the Potomac turned them into a kaleidoscope of gold and crimson bokeh. On the other side of the glass, two women sat in intimate seclusion, basking in the amber glow of chandelier light. Sergeant Major Williams traced one blood-red nail around the rim of her wine glass. Her dewy, glistening crimson lipstick smeared t...