From the museum excerpt, I read this and wondered:

“But this piece is only one in three pieces at the CIA.  There’s a large piece at the entrance when you walk into the new building that you pass through — there are large stone outcroppings.  Then there’s the Kryptos sculpture, and then there’s another pool of water, sort of a contemplative pool with coy in it – things like this.  A contemplative space where you might contemplate the days events.  So it’s three separate things.” -James Sanborn, Hirshorn Museum, Washington DC, 2005

I’d like some pictures of this coy pool (and I meant that both ways).  He gives it equal significance with the Morse Code rocks and the Copperplate.  From what I understand it’s basically a duck pond now.  It doesn’t seem like it was always meant to be just that.