L. David Marquet is a retired United States Navy captain and leadership expert renowned for transforming the nuclear-powered submarine USS Santa Fe from the worst-performing ship in the fleet to the best. His authority stems from pioneering the ’leader-leader’ model, which replaces traditional ‘command and control’ with empowered decision-making at all levels. Marquet’s real-world success in high-stakes environments has made his methods a globally recognized benchmark for organizational excellence and high-performance leadership.