Lee Jagoda - CJS Securities, Inc.
Analyst
Sure. And then one last one on the Buildings side, and I'll be done. Given that most of the higher value, more complex building projects typically have longer lead times and they'll be in backlog for a while, how do you deal with price escalators, or price concessions based on steel? Are you able to pre-buy or buy steel better on those projects? And how do we think about that dynamic in Q2, Q3 and Q4, assuming steel prices stay around current levels?
Norman C. Chambers - Chairman, President & Chief Executive Officer: Sure. So, on most work, we are able to manage the inventory turns with what we have in backlog and we have within our contracts and backlog the ability to change our prices based on steel price going up, okay? So, we have some protection there. I will tell you that the relationships we have with our builder network and our best builders have been with us on average for 30 years, we end up in a conversation. But, over the years since steel prices got to reach some volatility, which is now, 11 years ago, our dealer network is much better at dealing with this as well. So, there's not quite the angst. So, my point is that we deal with that pretty effectively. When it comes to big complex work, if there is a lot of steel to buy, and that job is out there, six months, nine months, 12 months, we will oftentimes contract so that we do not take steel price risk. In certain circumstances, we've actually gotten the end-user to pre-buy steel for the job and to free issue that. So, we go about that in a variety of different ways.