Marine Corps Gen. Joseph F. Dunford, Jr., chairman of the Joint Chiefs of Staff, left, speaks to students and spouses taking a National Defense University Capstone course on Fort McNair in Washington, D.C., Feb. 26, 2016. The Capstone program focuses on making military leaders more effective in planning and employing U.S. forces in joint and combined operations. Courses examine the decision-making process for a variety of concerns, including national security, military strategy and interoperability. Navy Petty Officer 2nd Class Dominique Pineiro