One issue is we have a sort of U-shaped configuration. That does become a problem where you have hot and cold aisles. Therefore, you potentially could have hot air blowing out the back of one and into the intake of another system. That's always an issue. However, it's not an issue for us because we have all those batteries in a separate, safe environment. We don't need to have them in our data center. The industry is going to a smaller footprint, but that does come at a cost, specifically for battery reserve time, size and density of the system, and BTU generation. Those three areas contribute to the heat generation factor. I think that they've done a really good job. But, when you look across our infrastructure, it's the UPS system that takes up the most space of any of our products.
