U.S. Marines from the 31st Marine Expeditionary Unit wade ashore from Landing Craft Utility (LCU) 1646 during a beach assault in support of exercise Talisman Saber 2013 in the Coral Sea on July 20, 2013. Talisman Saber is a biennial exercise that enhances multilateral collaboration between U.S. and Australian forces for future combined operations, humanitarian assistance, and natural disaster response.