160322-A-VY429-061 Idenau, Cameroon (March 21, 2016) Cameroonian and Nigerian Special Forces Groups collaborate during Obangame/Saharan Express 2016 (OESE16). OESE16 is a U.S. combined U.S. Africa Command-sponsored multinational maritime exercise designed to increase maritime safety and security in the Gulf of Guinea. (U.S. Army photo by Staff Sgt. Lea Anne Cuatt/Released)