But I will address and I'll kind to talk about mining in this and the transportation piece of the infrastructure as well. I'm not sure I'd put the same time frame, Jamie, that you put on Oil & Gas, but I think we're at a point where, as we get into next year -- now you got to understand, we're taking in services on the FEED, which really aren't big from a revenue or backlog perspective, but they're very good from a profitability standpoint, on a margin percentage basis. And I'll stop on that relative to the margin question. The EPC values are what we're going to see tick up as we get into next year. And I think that you will see Oil & Gas outpace mining as we get into next year. There are some very large programs, but I think there's also some modest projects out there that we're already working on that are in $300 million to $400 million range as well, which I think are really good signals relative to the longer-term growth cycle of E&C beyond '13, into '14 and '15, frankly. And obviously, that's when a lot of the earnings will drop in. So I think that's a very good sign. I think on mining, even though things have kind of pushed to the right, as I said, there are some major programs out there that we're still working on that still make good economic sense for our customers, and it's a matter of timing for them. So I think where I've used the term lumpy to describe E&C in the past, I think I'm going to start using that to describe the mining piece. But the other piece of I&I that I think is growing, and we've made this comment before, if you go back almost 5 quarters, there's been very little bidding activity in the transportation space. In fact, we've got 2 bids, 1 bid that's already gone in and I think 3 more that go in by the end of the year that are quite sizable. So when you combine that with the Oil & Gas piece -- I mean, sorry, with the mining piece, I think I&I in that segment has continued growth, but modest because of the amount of burn that you're going to see from a revenue perspective in the out quarters. So it's going to be a put and a take with regard to I&I, but the real, I think, growth is going to be in our E&C sector. So Biggs, I'll let -- if you wouldn't mind addressing the margin question.