Description: The title of the show refers to the structure of The Pentagon, which is configured in five concentric rings, from "A" to "E", with E being the outermost ring. Before any military action can be taken anywhere in the world, the mission must be planned and approved by the most important ring of the Pentagon, the E-ring. This is where the more high-profile work is done, all operations must be legally approved and the green light given by the Joint Chiefs of Staff.
