 Basically, they replace the legacy incandescent and fluorescent lighting fixtures. We've dealt with this for decades now, the old legacy lights. They have ballasts, they have starters that are associated with the operation of those fixtures. With the installation of the LED lights, we actually minimize some of those associated gear that, of course, are additional costs. The LED lights increase the lifespan of the lightings. Of course, they reduce maintenance and spare part costs, as well as for storage spaces as well. Because if you have more reliable light bulbs, you tend not to store more of them.