“The Hertgens are good people,” Joseph Mahon, 50, who coached both brothers at Toms River North High School, told The Post.{ai:summary}<p>It appears there is no content provided to summarize. Please provide the text or article you would like summarized.</p>

Exclusive | Inside the wealthy ‘all-American’ family torn apart by Princeton fratricide — as coach says accused killer was ‘very talented’

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