DVIDS - Images - US Marine Corps Mud Run [Image 7 of 9]

U.S. Air Force airmen from the 20th Comptroller Squadron walk through an obstacle at the U.S. Marine Corps 2012 Mud Run, Columbia, S.C., April 21, 2012. Airmen from the 20th CPTS split into three teams, Thunder Thunder Thunder Cats, The Number 2

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