Thomas Fanning
Analyst · FBR Capital Markets
Yes. So there's a lot of layers to that question. Let me hit just kind of a couple of them. And I just can't contain myself but start with a commercial. About half the scrubbers that we've put in place -- or I think maybe 2/3 of them are the Chiyoda scrubbers that we developed in our R&D facility along with the Chiyoda company out of Japan. And those companies use a fiberglass wall, if you will, for the bubbling structure where we take out the harmful effluents. We've been able to put those in place on time, under budget, and their performance has exceeded our expectations and normal industry performance. It's just another example of how R&D and also the Tianjin Construction Services Group -- we have about 1,500, 1,600 people in Birmingham who really work to the benefit of our customers. Now when I evaluate the effectiveness of the scrubber technologies that we have put in place, I would say that there's not a whole lot more that we're going to do to improve their performance. They already perform in an excellent manner. I would argue -- and I just know this. I'm not going to throw names out, but certain people around the industry have come to us for some help in trying to support their scrubber programs. And either it's a flaw in the technology or a -- because they rely on third-party constructors, they don't perform as they might have. And also, sometimes, scrubbers were deployed in order to meet certain, shall we say, merchant market credit thresholds that really don't operate in as an efficient manner as possible in order to generate thresholds that is required by the EPA. And then finally, some of the technologies that have been deployed were deployed years ago and just are not the latest and greatest technologies. So when EPA considers, "Oh, well, if you just operate more efficiently," I think you've got a very tough question here. In other words, are you going to be able to run your scrubbers more efficiently? Are you going be able to throw in DSI or trona or any of that other stuff? Remember, too, it's not just a simple matter of, well, if you just run your scrubbers more efficiently, you're going to comply. Well, if you add up the aggregate effect of all the other issues they're raising, including PM standards, where this DSI, they cause a problem on the PM side of the equation, it's just not that easy.
Marc de Croisset - FBR Capital Markets & Co.: Tom, just one clarification. Can a scrubber be effective but utilized infrequently? Is that a possibility? Can -- so even -- I'll just repeat that. Even if a scrubber is effective at removing SO2, can you use it less often, at your discretion?