GRADUATION HANDSHAKE Navy Adm. James A. Winnefeld Jr., vice chairman of the Joint Chiefs of Staff, shakes hands with one of 645 graduates after delivering the commencement address for the National Defense University on Fort McNair in Washington, D.C., June 12, 2014. The university is a national security institution focused on advanced joint education, leader development and scholarship. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 877247-S-QQO92-886.jpg Photo Gallery