President George W. Bush offers praise to outgoing Secretary of Defense Donald H. Rumsfeld. President George W. Bush offers praise to outgoing Secretary of Defense Donald H. Rumsfeld during Pentagon farewell ceremonies on Dec. 15, 2006. Bush pointed out that Rumsfeld, the second longest serving secretary of defense in the nation's history and the only one to serve in the post under two different presidents, was also the only one to serve in two different centuries. Rumsfeld relinquishes the Pentagon post to former CIA Director Robert Gates. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 432400-U-IFL79-997.jpg Photo Gallery