Yes, well, it's challenging, we've done some shuts ourselves, Rosenthal we've completed that we're successful, but it was a nail biter frankly, we had one contractor who typically comes in to do high pressure cleaning of the boilers and they just three weeks before maybe a month before the shut, they just - we can't send the crew and we're not going to do it, we're not comfortable and so you are going to risk scrambling around looking for an alternative supplier. We were successful ultimately and as optimal because it was kind of a new process for, they did it for us. But so that was an example of the skirting around to get qualified trades, if you like. And then I know that if we had to do that shut today it couldn't happen, you can't cross the border from Austria, you can't cross the border from the Czech Republic today, you can't stand hotels as a guest. So you - what does that look like. So we just, we got lucky as this thing comes in waves, if a company has got a shot at a time when there is a wave in their area, there's going to be disruptions and I can't predict that. I don't have a crystal ball, but it's for these big manufacturing facilities, it's a struggle and I'm sure it's impacting the decisions that other companies are making around the timing and the availability of contractors to do the work. Yes, we've had, I mean the hygiene protocols that are necessary to conduct a maintenance shut, these days are extraordinary. You could imagine whole parking lots with tents and rows and forms and people in gowns and taking your temperature, filling out questionnaires, verifying information, special trailers for canteens, and bathroom facilities protocols that don't mix contractors, they tend to become a little part among themselves, they don't actually physically meet with our people like they're barricaded part, they work separately, hygiene clean tools that kind of stuff. I think it's an extraordinary amount of effort to conduct these big shuts and Mercer is a very modern company with strong operating process controls we can handle that kind of stuff, but I'm not sure all our competitors are up to the challenge. So I'm still expecting to see unplanned downtime as a result to COVID just can't imagine, everybody is going to be successful doing what they want to do what they want to do it.