This book is dedicated to Ed Bastian.

The day I met you, I could see you were a leader of the highest caliber. Fortune has called you one of the world’s greatest leaders. As chief executive officer of Delta Air Lines, you lead one of the world’s most admired companies. For more than a decade, I have watched you lead with integrity, respect, perseverance, and a servant’s heart in the midst of extraordinary global change. I know of no one better at leadershifting than you. Thank you for your friendship and the way you model leadership to the world.