U.S. Navy Chief Steelworker Thomas C. Harper, left, teaches Builder Constructionman Andrew T. Door, both assigned to Naval Mobile Construction Battalion 11, how to install tile during a clinic renovation project as part of Africa Partnership Station (APS) 2013 in Supomu Dunkwa, Ghana, Oct. 5, 2013. 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.