John Gretton 'Jocko' Willink Jr. is an American author, podcaster, and retired United States Navy officer who served in the Navy SEALs. He was a member of SEAL Team 3 and has extensive experience in leadership and military operations. After his military career, Willink transitioned into civilian life, where he has become a prominent figure in discussions about leadership and personal development.

In addition to his military background, Willink is known for his work as an author and podcaster. He has written several books, including 'Leadership Strategy and Tactics,' which focuses on effective leadership principles. Willink also serves on the board of directors for the Major League Soccer club San Diego FC, further showcasing his diverse interests and commitment to leadership in various fields.