Jocko Willink and Leif Babin served as U.S. Navy SEAL officers in the toughest urban combat mission in the history of the SEAL teams. Their unit remains the most highly decorated special operations unit in the Iraq war. After returning, Babin and Willink built advanced Navy SEAL leadership training for the next generation of SEALs. With lessons learned from the battlefield they formed Echelon Front, a leadership training company, that teaches others to build and lead their own winning teams. Their book, Extreme Ownership, is a New York Times bestseller.