Moroccan sailors board the Royal Navy frigate HMS Argyll (F231) during exercise Saharan Express 2013 in the Atlantic Ocean off the coast of West Africa March 12, 2013. Saharan Express is a counternarcotics and proliferation exercise that is part of Africa Partnership Station (APS) West. APS is an international security cooperation initiative facilitated by Commander, U.S. Naval Forces Europe-Africa aimed at strengthening global maritime partnerships through training and collaborative activities in order to improve maritime safety and security in Africa.