 It's not likely any of them can be used, even the newer ones. Remember, even though the station has been up for a quarter century, a large percentage of the modules are launched much later, and so they're not that old. And it's as big as a football field. It's gigantic. So if you're not going to salvage some modules, what you're going to have to do is deorbit it. You can't leave it up there because it's going to come down on its own if you don't control it.