In unwind how does the admiral make money?

In "Unwind" by Neal Shusterman, the Admiral makes money by running a harvesting facility where unwound teens are processed for their body parts. He profits from the sale of these parts to various clients who need them for medical purposes or organ transplants. Additionally, he has a vested interest in the unwinding process as it aligns with his beliefs about the value of life and death, allowing him to justify his actions financially and ethically.