Sure. So you want to talk both margins and free cash flow. So margins, obviously, it's an unprecedented quarter we had, strong volume growth we had, great product mix we had, all the productivity programs that we had already been working on largely in services and DAS and EUROIMMUN, and as on top of that, we had great OpEx leverage. And so even though our OpEx was up, it was still a good leverage. So I think in terms of the sustainability of that I think it supports the overall thesis for PerkinElmer long-term that when those things happen, we do have the ability to get to mid-20s to high-20s operating margin business. But certainly this was an unprecedented quarter of margin expansion in the short term, but some of this will remain. I mean, I think we're becoming more efficient. I think the productivity programs are being put in place. I think our volume and mix is changing over time. So it's difficult to say, what it would completely snap back to in the very short term. But I think the long-term, this is proving what the business can be. As it pertains to free cash flow, we had one of our best quarters, again and certainly, our best first half in a long time. And that is, there's a couple of things in there. Our receivables we've been – as you know when we've been talking about, we're making a lot of process improvements on. But we also did have a small benefit with regards to COVID terms. But I think, receivable as progress will continue to happen here over time, even in a normalized environment. You can see that we invested a significant amount in inventory. And I think most half of that it's about our COVID inventory. And we think that having the product ready, which Prahlad mentioned in his prepared remarks that we are tracking our turnaround time, is enabling us to be ready for customers and when customers that need the product immediately. And then the other half, we always have first half built. It's probably a little bit more than normal due to the demand levels, but our non-COVID backlog has increased. So I do think that the second half will our inventory levels should come substantially down. And so, yes, we're still, I think what we were saying, Derik, is that 80% to 90% we're tracking. There's a lot of good underlying progress here on receivables, on our ability to manage our SIOP. It just so happens right now that our inventory is required to be high and to meet our customer's demand, but we're focused on it. And I think we feel confident that we can get to that 85% to 90% range in a couple of years. And if it happens before that, that's great.