PENTAGON MEMORIAL TOUR U.S. Defense Secretary Chuck Hagel speaks with Sweden's King Carl XVI Gustaf and Queen Silvia before a tour the Pentagon Memorial, May 10, 2013. The king and queen placed flowers at the bench of Dana Falkenberg, the youngest person to be killed at the site on Sept. 11, 2001. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 713758-G-ZYV28-946.jpg Photo Gallery