160813-N-AV746-148 CORONADO, Calif. (Aug. 13, 2016) Chief selects, assigned to Naval Special Warfare, clean a retired Mobile Riverine Force Monitor during a community service project at U.S. Navy/ U.S. Coast Guard Vietnam Unit Memorial Monument at Naval Amphibious Base Coronado. The Vietnam memorial honors the riverine Sailors who served in the Vietnam War. An All-volunteer force of six to eight Vietnam War veterans maintains the memorial. (U.S. Navy photo by Mass Communication Specialist 2nd Class Timothy M. Black/Released)