U.S. Marine Corps Sgt. Maj. Mario Marquez, the III Marine Expeditionary Force sergeant major, left, and Mari Gregory speaks on their radio show with AFN May 14, 2019, on Plaza Housing. Gregory and Marquez have partnered up since July 2017 to provide time and space for the shared Okinawan community to understand each other and exchange friendship. - U.S. Marine Corps Sgt. Maj. Mario Marquez, the III Marine Expeditionary Force sergeant major, left, and Mari Gregory speaks on their radio show with AFN May 14, 2019, on Plaza Housing. Gregory and Marquez have partnered up since July 2017 to provide time and space for the shared Okinawan community to understand each other and exchange friendship.