U.S. Marine Gen. James E. Cartwright, vice chairman of the Joint Chiefs of Staff, congratulates Navy Cmdr. C.J. Cassidy at the National Defense University graduation on Fort Lesley J. McNair, Washington, D.C., June 12, 2008. U.S. Marine Gen. James E. Cartwright, vice chairman of the Joint Chiefs of Staff, congratulates Navy Cmdr. C.J. Cassidy at the National Defense University graduation on Fort Lesley J. McNair, Washington, D.C., June 12, 2008. SHARE: Download: Full Size (3.24 MB) Tags: Photo Essays Credit: VIRIN: 480612-X-VZS80-260.jpg Photo Gallery