Dempsey Addresses Students, Spouses at Capstone Course on Fort McNair Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, speaks to students and spouses attending a Capstone course at the National Defense University on Fort McNair in Washington, D.C., May 12, 2015. Newly selected general and flag officers must take the course, which was created in 1982. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 053559-G-ASK91-922.jpg Photo Gallery