'' Gridley '' returned to San Diego in June 1989 . On 17 October of that year , the ship 's visit to Naval Station , Treasure Island , California , was interrupted by the 6.9 Loma Prieta earthquake that struck the San Francisco Bay area . '' Gridley '' s crew provided assistance to victims in San Francisco 's severely damaged Marina district , and was awarded the Humanitarian Service Medal for disaster recovery efforts
Loma Prieta earthquake
1989 Loma Prieta earthquake
USS Gridley (DLG-21)