Sgt. Maj. Richard D. Thresher, incoming sergeant major, 1st Marine Logistics Group, addresses the crowd during the relief and appointment ceremony with Sgt. Maj. Antonio N. Vizcarrondo, outgoing sergeant major, 1st MLG, at Camp Pendleton, Calif., Sept. 21. Thresher, a native of Arlington, Texas, recently served as the sergeant major of Headquarters Battalion, 3rd Marine Division and sergeant major of Marine Corps Base Camp Courtney, Okinawa, Japan. - Sgt. Maj. Richard D. Thresher, incoming sergeant major, 1st Marine Logistics Group, addresses the crowd during the relief and appointment ceremony with Sgt. Maj. Antonio N. Vizcarrondo, outgoing sergeant major, 1st MLG, at Camp Pendleton, Calif., Sept. 21. Thresher, a native of Arlington, Texas, recently served as the sergeant major of Headquarters Battalion, 3rd Marine Division and sergeant major of Marine Corps Base Camp Courtney, Okinawa, Japan.