Major General Paul E. Lefebvre, “LB6”—was the finest leader I ever knew. He was a Marine’s Marine, tactically brilliant and deeply human. He led from the field, remembered the details of his Marines’ lives, and carried himself with calm, sharp kindness. His presence set the standard I’ve tried to live up to in every chapter of my life. This is my thank you to him, and a reflection on the invisible ways great leaders leave their mark.