Book excerpt: Some time ago, Ralph Winter brilliantly identified three eras of modern missions: Era 1: William Carey focused on the coastlands; Era 2: Hudson Taylor focused on the inlands; Era 3: Donald McGavran and Cameron Townsend focused on unreached peoples. With all the fast and furious changes swirling around us today in twenty-first century missions, have we entered a Fourth Era? If so, who are the people primarily involved? How are they selected? How are they trained? How long do they serve? Has the Third Era ministry focus--reaching the unreached--changed? If so, to what? Are there any successful case studies out there? Have McGavran and Townsend passed the baton to a new leader(s)? If so, to whom? This book seeks to answer these and related questions. Contributors: Dr. Ben Beckner Dr. Monroe Brewer Dr. Don Finley Mike Griffis Dr. Gary Hipp, MD Jerry Hogshead Kaikou Maisu Judy Manna Kenn Oke Dr. A. Sue Russell Dr. Robert Strauss Peter Swann Bryan Thomas Diane Thomas Dr. Mike Wilson Dr. Sherwood G. Lingenfelter