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 IMAGE: Download Image: Full Size (0.04 MB) Photo By: VIRIN: 165597-K-LKO49-270.jpg Photo Gallery