What is the book (or books) you've given most as a gift, and why? Or what are one to three books that have greatly influenced your life? At some point about halfway through my 20-year career in the SEAL Teams, I read About Face by Colonel David H. Hackworth. I haven't stopped reading it since. Hackworth came up through the ranks and served as an infantry officer in the Korean and Vietnam wars. He was revered by his men and respected by all who worked with him. While the stories of combat are incredible and there is much to be learned about battlefield tactics in the book, the real lessons for me are about leadership. I adapted many of his leadership principles over the years and still continue to learn from his experiences. Thanks for everything, Colonel Hackworth.