Nigerian sailors with the Special Boat Service and Cameroonian soldiers with the Rapid Intervention Battalion conduct a simulated boarding aboard the joint high speed vessel USNS Spearhead (JHSV 1) in the Gulf of Guinea April 20, 2014, during Obangame Express 2014. Obangame Express is a maritime exercise conducted by U.S. Naval Forces Africa to improve cooperation among African partner nations in order to increase safety and security in the Gulf of Guinea. (DoD photo by Mass Communication Specialist Seaman Justin R. DiNiro, U.S. Navy/Released)