Preface Recognizing that the first-line supervisor plays an indispensable role in the enforcement of American law, and that a straightforward book dealing with the responsibilities of supervisors and the most effective methods of fulfilling these responsibilities was needed, the author wrote the first edition ofSupervision of Police Personnelin 1970. Four subsequent editions have followed during the ensuing three decades. With the beginning of the new millennium, the author's brother, Marvin D. Iannone, has joined in the writing of this sixth edition. During their long law enforcement careers--a combined total of 100 years--both authors realized (and have had this realization confirmed countless times) that certain tenets of the first-line supervisor remain inviolable and that one cannot supervise effectively without an appreciation of these tenets. These time-tested principles include the following: Although a supervisor is a manager, he must first think of himself as a leader. Indeed, one cannot be a leader without followers. A first-line supervisor is apart of those whom he leads, while at the same time beingapart fromthem. In such a role, he must represent the rank and file to senior management and simultaneously represent senior management to the rank and file. When supervising, he must practice the Golden Rule. He must earn, not demand the respect of others. He must set the highest example. He must without exception be consistent and fair. His honor and professionalism must always be beyond reproach. It is the authors' conviction that a supervisor, experienced or inexperienced, who applies the principles and techniques outlined in this book while using the foregoing tenets as an ever-present backdrop will be well on his way toward actualizing his greatest potential. This edition has been updated to be consistent with changes in the law and the currently preferred practices of progressive police organizations. The authors sincerely express their gratitude to all those professionals in law enforcement for their many contributions to the preparation of this book, and we are particularly grateful to all who have had such a profound influence on our professional and personal lives. We also thank the following reviewers: Alvin Berndt, Criminal Justice Institute; Michael Buerger, Northeastern University; Alan Mentzer, Truckee Meadows Community College; and Alan Marston, South Maine Technical College. Our special thanks to Clara and Patricia for their never-ending support and patience. Nathan lannone Marvin lannoneIannone, M. D. is the author of 'Supervision of Police Personnel (6th Edition)', published 2000 under ISBN 9780136492290 and ISBN 0136492290.