Secretary Gates talks with family members of those who lost their lives in the Sept. 11, 2001, terrorist attack. Secretary of Defense Robert M. Gates talks with family members of those who lost their lives in the Sept. 11, 2001, terrorist attack on the Pentagon during a wreath laying ceremony on May 5, 2011. Gates was among several dignitaries who joined Vice President Joe Biden for a memorial at the site of the terrorist event that killed 184 people. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 246959-Z-DDO14-632.jpg Photo Gallery