U.S. Army Soldiers assigned to the 331st Transportation Company, 7th Sustainment Brigade from Fort Eustis, Va., set up a modular causeway system on Dogu Beach near Pohang, South Korea, April 14, 2013. The MCS is a mobile port designed to load and unload equipment or personnel onto otherwise inaccessible land for either combat missions or humanitarian aid. (U.S. Army photo by Sgt. Candace Le/Released)