 According to a bunch of retired Secret Service agents who've been giving media interviews, there's no such rule. If you see something, you just take them out. And so why didn't they? And again, I mean, it's not like they were ordered not to shoot because they wanted Trump to be shot. That seems unlikely. But so why didn't they shoot? Well, we're going to have to get answers to those questions. Probably we won't know that for months to come as investigations continue and people continue.