 I've seen people go in there with wire scrub brushes by hand. I've seen people go in there with scrub brushes on a drill that are nylon and using some paint remover and that kind of stuff. Some of the less caustic ones, not the aircraft stuff, but maybe some of the orange stuff and getting in there and doing that. It is a really tough one. And I'm going to say you're going to probably have to try five or six different ways to do it.