In the fourth interview session, conducted on April 17, 2019, Coffin shares his reasons for moving to the Pacific Northwest and discusses his work as a federal prosecutor at the U.S. attorney’s office in Eugene, Oregon, from 1980 to 1992. He describes how the Eugene office grew, talks about his work on methamphetamine-related cases, and discusses his relationship with the district attorney’s office. He talks about how he continued to develop as a prosecutor during his time at the Eugene U.S. attorney’s office, and speaks further about his prosecutorial philosophy. He talks about raising a family in Eugene. He then talks about his service as a magistrate judge for the U.S. District Court of Oregon. He discusses some of the cases he handled, particularly a case involving disability discrimination in golf. He describes the District Court’s use of pre-trial conferences, and talks about working on settlements.