 An airship has a relatively strong steel frame, but it has an incredibly weak outer cover, which is really just very, very thin, doped linen. And our 101s was rotting. You could put your finger through a lot of it. It also has these gas bags, which we've said are just, you know, they're animal intestines. They're tiny. They're very fragile things. So you have this outer cover of linen and cotton, right?