A sailor on the multi-purpose amphibious assault ship USS Iwo Jima checks on the mooring lines as the ship prepares to depart Naval Station Guantanamo Bay after refueling and taking on supplies, Aug. 4, 2010. Before arriving at Guantanamo Bay, Iwo Jima completed the first phase of Continuing Promise 2010, a four-month humanitarian and civic assistance mission to communities in Latin America and the Caribbean.