Many leaders and managers have led improvement initiatives in a variety of different industry sectors. Most believe that when they begin these efforts, they already have the tools they need in their improvement backpack. Using these tools, they make substantial improvements to processes in a wide array of industry segments. As time passes, however, most realize that there is a missing link in their arsenal of tools for improvement. The author of this book faced this same predicament and he discovered what the missing link was in his improvement tool kit: Theory of Constraints (TOC). Once he learned the details of TOC, his ability to make major improvements jettisoned upward to levels he had not seen before. TOC is the common denominator in all the case studies presented in this book.