 Although the ships were unloaded within nine days, the unpacking and storing of munitions continued into 1991.The remainder of the chemical weapons was a small number of World War II era weapons shipped from the Solomon Islands.Agent Orange was brought to Johnston Atoll from South Vietnam and Gulfport, Mississippi in 1972 under Operation Pacer IVY and stored on the northwest corner of the island known as the Herbicide Orange Storage site but dubbed the "Agent Orange Yard".