Airmen from Langley Air Force Base, Va., honor fallen defenders by marching through the streets of Amherst, Va., during the Security Forces 9/11 Ruck March to Remember Aug. 25, 2011. Langley AFB Airmen traveled 141 of the 2,181 miles to pay their respects to the fallen defenders of Operation Enduring Freedom. (U.S. Air Force photo by Airman 1st Class Racheal Watson/Released)