Sgt. Erica Winkel maneuvers around an obstacle. U.S. Army Sgt. Erica Winkel maneuvers around an obstacle during an individual movement techniques course as part of three-week pre-mobilization training at Camp Atterbury, Ind., on Oct. 11, 2007. Winkel is assigned to Headquarters and Headquarters Company, Special Troops Battalion, the 371st Sustainment Brigade, Ohio Army National Guard. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 165597-K-LKO49-270.jpg Photo Gallery