Marines with Battalion Landing Team 1/1, 13th Marine Expeditionary Unit and sailors aboard the USS Green Bay (LPD-20), man the rails while sailing into Darwin, Australia, for a Theater Security Cooperation event Sept. 2, 2011. The 13th MEU is deployed with Boxer Amphibious Ready Group, also providing support for maritime security operations and theater security cooperation efforts in the U.S. 7th Fleet area of responsibility.