What is the author's style in Peace Child by Don Richardson?

Don Richardson tells some of the story, especially Part One, from the omniscient third person point o view. He appears to have knowledge of the events since conducting interviews with the Sawi years after the fact. He tells in detail the story of Yae and his betrayal. The stories are somewhat embellished, by the addition of what Richardson assumes to be the thoughts, feelings and intentions of the men involved, based on interviews with men from similar situations.