How does the author use foreshadowing in In God We Trust, All Others Pay Cash?

In Chapters Thirteen and Fourteen, the author uses foreshadowing to build the reader's anticipation. He mentions an encounter with Grover Dill and the secret presence of a Tasmanian Devil within every red-blooded American boy long before he recounts the day of the Devil's actual unleashing on Dill himself. He also introduces the theme of boys living in a jungle as though they are all wild beasts incapable of being tamed.