If they wanted to add concentric rings, then they screwed up big-time by sticking the thing next to a river.
Though with the military budget, rerouting the river shouldn't be that hard to do. But the river also constitutes the boundary between Virginia and DC, so there may be political problems with that.
Though with the military budget, rerouting the river shouldn't be that hard to do. But the river also constitutes the boundary between Virginia and DC, so there may be political problems with that.