CHAIRMAN'S SALUTE Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, salutes during the playing of the national anthem as Vice President Joe Biden and his wife, Dr. Jill Biden, look on during a ceremony commemorating the 50th anniversary of the Vietnam War at the Vietnam Veterans Memorial wall in Washington, D.C., May 28, 2012. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 212484-A-BFM77-370.jpg Photo Gallery