U.S. sailors draw blood from U.S. Marines during a walking blood bank on Camp Leatherneck in Helmand province, Afghanistan, Aug. 14, 2014. U.S. sailors draw blood from U.S. Marines during a walking blood bank on Camp Leatherneck in Helmand province, Afghanistan, Aug. 14, 2014. SHARE IMAGE: Download Image: Full Size (2.07 MB) Tags: Photo Essays Photo By: VIRIN: 134031-Z-FML65-173.jpg Photo Gallery