 You can see heat wear. You end up with hot pockets. Right. Well, you see heat wear patterns on the shingles where it might be cooling over here, but not over here or so forth, or where they don't put enough soft intake ventilation. Yeah. It's real obvious because those shingles will fail prematurely. You know, they'll blister. Wow. Yeah. So it's real obvious if you know what you're looking for. And then my confidence comes from the training that we've had, right? Yeah.