Yes. Great question. First, I don't know why anybody was surprised. I've said that – essentially, if you go back a year ago, we said that 2016 – or 2015 would be a little bit of a flat year compared to the 2014, and then we'd have another step-up in 2016 and 2017. So that message has been very consistent for the last 15 months. The surge in activity, we actually talked about that also in our call that we get a lot of surge of activity in August and September as host utilities look at their capital budgets for next year, so that's when the robust activity occurs. Now, next – in your question, let's work backwards from the Clean Air Act. That really takes effect in 2022. If it goes in and it's graded into 2030, those – remember, our plants last produce tax credits in 2021. So, we don't see those as having a big issue, or that law having a big issue with respect to running our plants through 2021. Next, we – our plants are better, they're more efficient. Or excuse me, the host utilities where we put our plants are better, they're more efficient, they're earlier on in the dispatch curve. And so, as a result, they're less likely to be retired than the broader fleet. So, I don't think it's good to use historical trends to predict what will happen to our 20 different locations. There's about 600 different utility plants out there and we're operating about 20 of them, and they're better and less likely to retire. Second of all, the displacement of natural gas, you can go out to the Energy Information Administration web site and you can see that the displacement of coal to use natural gas, there was a surge in that over the last five years. But, even that official site doesn't predict that happening, certainly not between 2021. So, we think our plants are better-positioned. I think they're less likely – and frankly, we sit at the strategic table with our host utilities and we know in advance of what their plans are. And frankly, if they're going to retire a plant, we won't put in one of our clean energy plants. So we believe our plants will run through 2021. They're at better locations. They're not subjected to natural gas. They're better placed in the dispatch curve, better placed regionally in terms of coal versus natural gas utilization. So, I don't see the risk that these plants will be displaced the way the broader fleet might have been.