A Barksdale Airman salutes a flag flown at half-mast on Barksdale Air Force Base, La., Sept. 11. President Barack Obama signed a proclamation on Sept. 10, 2012, designating today, the 11th anniversary of the 2001, terrorist attacks on the United States as Patriot Day and a National Day of Remembrance. This was done in remembrance of those individuals who were lost during the attacks. (U.S. Air Force photo/Senior Airman Sean Martin) (RELEASED)