Keywords: US Navy 080911-F-8801M-004 The J.W. Alvey Elementary School Singing Sunrays perform to open the Pentagon Memorial dedication ceremony Sept. 11, 2008.jpg en WASHINGTON Sept 11 2008 The J W Alvey Elementary School Singing Sunrays perform to open the Pentagon Memorial dedication ceremony Sept 11 2008 The national memorial is the first to be dedicated to those killed at the Pentagon on Sept 11 2001 The site contains 184 inscribed memorial units honoring the 59 people aboard American Airlines Flight 77 and the 125 in the building who lost their lives U S Air Force photo by Andy Morataya/Released 2008-09-11 080911-F-8801M-004 Navy http //www navy mil/view_image asp id 63823 U S Air Force photo by Andy Morataya PD-USGov-Military-Navy Pentagon Memorial Students in Virginia Vocalists Seventh anniversary of the September 11 2001 attacks School children of the United States Blue shirts Student choirs |