Defense Secretary Robert M. Gates, left, meets with former Defense Secretary Donald H. Rumsfeld in the Secretary's office just prior to Rumsfeld's portrait unveiling ceremony at the Pentagon, June 25, 2010. Defense Secretary Robert M. Gates, left, meets with former Defense Secretary Donald H. Rumsfeld in the Secretary's office just prior to Rumsfeld's portrait unveiling ceremony at the Pentagon, June 25, 2010. SHARE: Download: Full Size (8.22 MB) Tags: photo essays Credit: VIRIN: 797670-W-UJU24-165.jpg Photo Gallery