FAMILY MEMBERS Defense Secretary Robert M. Gates talks with family members of those who lost their lives in the Sept. 11, 2001, terrorist attack on the Pentagon at the Pentagon Memorial, May 5, 2011. Gates was among several dignitaries who joined Vice President Joe Biden to lay a wreath at the memorial, which is the site of the disaster that killed 184 people. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 622551-S-DAT20-231.jpg Photo Gallery