Average Joe often hears on the TV about a rogue state threatening to launch nuclear weapons at his country, and he's naturally petrified about it. He's extremely interested in knowing about any potential missile launch as quickly as possible, and he's willing to spend moderate sums of money / travel / hire others / do generally anything that's not terribly unethical in order to learn about the launch as quickly as possible. Even if he's not the first person to learn about the launch, he's still incredibly devoted to learning about it as soon as possible, preferably before it becomes common knowledge.
You may assume anything you need about Joe, but to make things concrete, let's say that the rogue state is located on a peninsula halfway across the world and is blocked to tourists, not that Joe can speak the language anyhow.
Just how quickly can Joe learn about the launch, and how?