Remembering 9/11 Defense Secretary Robert M. Gates signs the guest book at the Pentagon chapel prior to attending a Sept. 11, 2001 remembrance and wreath laying ceremony at the Pentagon, Sept. 11, 2007.  Defense Dept. photo by Cherie A. Thurlby Back To HomePage More Photo Essays Next About DefenseLink DoD Inspector General Freedom of Information Privacy & Security External Link Disclaimer Web Policy Contact Us USA.gov