9/11 Commemoration Ceremony
U.S. Air Force Staff Sgt. Danielle Diaz, 379th Expeditionary Medical Group medical technician, strikes the memorial bell during the bell ringing ceremony to mark the 11th anniversary of the Sept. 11, 2001, during the 9/11 Commemoration Ceremony in Southwest Asia, September 11, 2012. The Grand Slam Wing observed the 11th anniversary of the Sept. 11, 2001 attack to honor and remember those who lost their lives at the World Trade Center, the Pentagon, the fields of Shanksville, Penn., and on the battlegrounds of Iraq and Afghanistan. (U.S. Air Force photo/Staff Sgt. Sheila deVera)