U.S. Air Force Chief Master Sgt. Bryan Vibert, 633rd Security Forces Squadron security forces manager, passes the guidon to Master Sgt. Stacy Reeves, Air Combat Command Headquarters SFS training manager, during the Security Forces 9/11 Ruck March to Remember in Amherst, Va., Aug 25, 2011. Security Forces units participated in the march in remembrance of the terrorist attacks on Sept. 11, 2001 and the defenders who have lost their lives in support of Operation Enduring Freedom. (U.S. Air Force photo by Airman 1st Class Racheal Watson/Released)