First of all, all the savings that we achieved under our margin enhancement initiatives are intended to be permanent savings, okay? So, we accelerated them, but they aren't going to disappear, for example. So, as we look to the full year benefits of the $50 million, we're still very comfortable with that. And we may see the potential to do a little better than that. So, how did things get accelerated? I would say a couple categories where we were able to push things was on the labor optimization front, is one area that sticks out. So, we were able to do more work there. Of course, there's some consumption related areas that we knew that we could do better at, and we invoked those particular activity early. But again, those tend to be things that are more permanent in nature and not timing related in that regard. So, $35 million, we probably expected about $20 million in the first quarter. So, we did about $15 million better than we had anticipated. But again, those are permanent. So, when we think to the second quarter, as we indicated, actually, the incremental amount of initiative benefits might be modest in the second quarter. It's not like they flip around. But then, as you go into the back half of the year, you start to pick up the steam in that regard. As we look to the total benefits, not included in the $35 million, we did have some belt tightening here in the first quarter. That might be in the neighborhood of $5 million to $10 million. That's part of when we made the comments about some temporary adjustments and everything when we gave our second quarter guidance of $0.45 to $0.50. Those will be a little bit lower. And examples of those would be timing of maintenance costs. For example, with the level of activity that had to happen between Texas and Mexico and things like that, there's a little bit less focus on some of the maintenance activities within the business. So, that's just going to happen in the second quarter. But again, that's different and distinct from $35 million that we believe is going to carry forward.