The British Royal Navy boarding officer for the frigate HMS Argyll (F 231) trains Liberian sailors aboard the Argyll during Saharan Express 2013 in Dakar, Senegal, March 9, 2013. Saharan Express is a counternarcotics and proliferation exercise that is part of Africa Partnership Station 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.