Third Fleet
In 2015, Tyson was installed as commander of the Third Fleet, making her the first woman to lead a United States Navy ship fleet. Tyson implemented the '3rd Fleet Forward' initiative announced by CINCPACFLT Admiral Scott Swift, retaining Third Fleet operational control of forces, including a three-ship SAG and Carrier Strike Group 1, deployed beyond the hitherto Third Fleet/Seventh Fleet boundary at the International Date Line. She retired on September 18, 2017.