The exercise is called Bold Alligator 2012, the East Coast‘s largest joint and multinational amphibious assault exercise in the past ten years. US units involved are the Enterprise Carrier Strike Group, Expeditionary Strike Group 2, 2d Marine Expeditionary Brigade, Iwo Jima Amphibious Ready Group, 24th Marine Expeditionary Unit, Naval Expeditionary Combat Command and other ships and units. Forces from eight other countries are taking part.