That's a great question. So Gary, this is Jeff, let me try to hit part of it if I can. On the commercial side, we do a lot of projects that are every project is a little bit different on the commercial side. However, there's such a long history, within Graham manufacturing of these projects that a lot of times we can take a lot of what was learned from previous projects and apply them to the next project. So while they're all different, there's a lot of similarities there and there's a lot of history there. On the defense side, the first article, there's a lot of engineering. So let me give you a good example, one of the projects that's in fabrication right now was a project that was one in, I believe it was fiscal 2015 and there was 2016. And there was a, there was a lot of engineering work that was done over a number of years. And so that after the engineering work, when you start the fabrication work, the -- you're dealing with new engineering work from our side, you're dealing with new vessel configuration for the Navy side. And it's really just -- there's a lot of back and forth between us and the government as there is in the government -- the Navy, I'm sorry, the Navy and the customers as there is on the commercial side. But that back and forth on the commercial side is a six-month process, the back and forth here is a many year process. And there's a lot of changes as you go. And some of the fabrication, when we thought about this four or five years ago, and we're looking at it now. It's difficult fabrication, difficult welding, and its things that we're doing for the first time. On the commercial side, we've done very similar welding, many, many times, and so it's not as much of a lift. The nice thing about it, though, is once you get through that learning curve, and we're seeing it even in the vessels we're doing now, the latter part of the project is much more efficient than the beginning part of the project. And so as we look at the next project, we expect that learning -- all the learnings that we got from the first article are behind us now and really are part of our procedures. So very long answer to a short question, but I hope that was helpful.