Airmen, Soldiers and civilians participate in the 28th Security Forces Squadron 9/11 Ruck March at Floyd Fitzgerald Field, Rapid City, S.D., Sept. 6, 2014. The march was first organized by the 28th SFS and 28th Civil Engineer Squadron fire protection flight; since then, the defenders have organized the event and made it into an annual tradition. (U.S. Air Force photo by Senior Airman Hailey R. Staker/Released)
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