 was having a whitish discoloration. And he didn't get up on the roof. He had his binoculars. He kind of zoomed in, and he was kind of figuring out that it was some kind of staining or something along those lines. Finally, he took a picture of it on his phone and kind of blew it up, and he was showing me. I said, oh, that's efflorescence. I said, you've got a problem with that chimney, or there's a good chance.