Delaney Hammond, Sr., does not know that he is going to be arrested. It is not hard to find his flight, learn that the chauffeur can also fly the tiny family airplane and will be bringing the boss directly to Forks's little airport to save transit time, and be there to meet them at the airport with a pair of uniforms.

So Charlie does all that.

"Delaney Hammond, you are under arrest," Charlie says, while Joshua puts on cuffs and Terry makes sure the chauffeur isn't going to interfere. "You have the right to remain silent..." The Miranda rights just pour out, like they're all one word; Charlie doesn't really think about them. He doesn't even skip the part about how this ridiculously rich person could be provided a public defender if he cannot afford one.