HONOLULU—A giant U.S. government fuel storage installation hidden inside a mountain ridge overlooking Pearl Harbor has provided fuel to military ships and planes crisscrossing the Pacific Ocean since World War II.
Its very existence was a secret for years. Even after it was declassified, few people paid attention—until late last year, when jet fuel leaked into a drinking water well, showed up in tap water, and sickened thousands in military housing.
