Yes so Jamie, a couple of things, right? If you think about our second half of this year, and let's break it out by business, so if we look at Clean Energy, our expectation is that in '23, in the second half, margins are going to improve over '22 by about 200 basis points - just over 200 basis points. So a lot of that has to do - we had - we've talked about it at NASUM right? We had a lot of impacts to our industrial business, and quite frankly, we were under absorbed relative to our renewable business because there wasn't a lot of work. When you take into account the level of activity that's going to exist in the second half '23 in renewables and you take into account the fact that we're not going to have these headwinds with industrial, we actually think that 200 basis points, again, is relatively conservative. We're going to beat Q1 on a year-over-year basis, we think, by over 400 basis points. So we actually have the improvement moderating in the second half of the year versus what we're seeing in the first quarter. So again, we think that's very achievable. In power delivery, when we look at the margin profile in the second half of '23 versus last year, Again, it's about a 100 basis point improvement. And quite frankly, with the opportunities that exist there, we would - in both of those businesses by the way, we would still be significantly below some of our peers. So these are not for - by any stretch of the imagination, what we think are optimal margins, they're not. We've got a lot of work to do to continue to improve. We think the ability there to continue to improve over time exists. And to your last question, what is driving down some of these margins, are the investments that we're making, right? We're going to grow revenue substantially, not just in '23, but we think in '24. We're making the investments in people across every segment that we operate in. We have tremendous revenue growth opportunities. It's about having the resources in place to be able to execute on that, and we're trying to prepare ourselves. Again, we feel really good about our ability to achieve our current targets for '23, but embedded in those targets are elevated level of costs to prepare us for further growth in '24 and '25.