USNI News – Amphibious assault ship USS America (LHA-6) and its embarked elements of the 31st Marine Expeditionary Unit (MEU) arrived in Bougainville, a region in Papua New Guinea, Thursday, to carry out Humanitarian Assistance and Disaster Relief (HADR) operations after volcanic eruptions of Mount Bagana in July displaced numerous communities in the area and cut off access to food and water for them.