150122-N-RB579-003 DAKAR, Senegal (Jan. 22, 2015) A civil service mariner cleans a vent on the stern of the Military Sealift Command joint high-speed vessel USNS Spearhead (JHSV 1). Spearhead is on a scheduled deployment in the U.S. 6th Fleet area of responsibility to support the international collaborative capacity-building program Africa Partnership Station. (U.S. Navy photo by Mass Communication Specialist 1st Class Joshua Davies/Released)