John L. Estrada was the 15th Sergeant Major of the United States Marine Corps. He succeeded Alford L. McMichael on June 26, 2003, becoming the 15th Sergeant Major of the Marine Corps. Estrada stepped down on April 25, 2007, turning over the post to SgtMaj Carlton Kent. Estrada retired from the Marine Corps in June 2007, after over 34 years of service.
Read more about John L. Estrada: Awards and Honors