150411-N-JP249-010 GULF OF GUINEA (April 11, 2015) Civil Service Mariner Engine Utilityman Fred Walker grinds a piece of metal aboard the Military Sealift Command’s joint high-speed vessel USNS Spearhead (JHSV 1) April 11, 2015. Spearhead is on a scheduled deployment to the U.S. 6th Fleet area of operations in support of the international collaborative capacity-building program Africa Partnership Station. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kenan O’Connor/Released)