[QUOTE=paytonc;24710162]Update, with some images of preliminary plans:
http://www.flightglobal.com/blogs/ai...pansion-plans/

From this diagram of the future circulation, it looks like everybody will have to double back to get to the security checkpoint. If I'm reading that correctly, pax arriving via car will have to go downstairs one level, then walk out of the terminal most of the way to Metro before turning around to go through security and then back into the terminal.

That's not a huge imposition, but considering how much people complain about having to walk between the future Metro stop at IAD and the main terminal... there may be some protests.

If that's the price of keeping National Hall unobstructed, I guess can live with it. But it's not what I'd call elegant.