U.S. Army 1st Lt. Sarah Casper, left, and Capt. Katherine Redding, right, hang a poster promoting vaccines at the district center in Spin Boldak City, Kandahar province, Afghanistan, Sept. 18, 2011. Casper and Redding are assigned to the 504th Battlefield Support Brigade. U.S. Army 1st Lt. Sarah Casper, left, and Capt. Katherine Redding, right, hang a poster promoting vaccines at the district center in Spin Boldak City, Kandahar province, Afghanistan, Sept. 18, 2011. Casper and Redding are assigned to the 504th Battlefield Support Brigade. SHARE IMAGE: Download Image: Full Size (2.08 MB) Tags: Photo Essays Photo By: VIRIN: 567004-H-IRD68-114.jpg Photo Gallery