 He travels, does way more events than the other formers do, and the threats against him are astronomically higher than they are against the other formers. For that reason and that reason alone, he should have a huge detail that's close to the detail of the same size as the sitting president. He's not just a former president. He's trying to become the next president. That's right. It's two boxes there. Bill Clinton is not trying to become president, nor could he, right? It's a far lower risk profile.