SPC Cameron Gary and PVT Neil Smith, 91st Engineer Battalion, 1st Armored Brigade Combat Team (BCT), 1st Cavalry Division, march through rain, mud and low temperatures to the obstacle course—the final challenge—during the 10-mile “Saber Challenge,” held Jan. 22 at Fort Hood, TX. In the future, clothing made from nanocomposite materials could enable Soldiers to run such courses and forget about the need for laundry. (Photo by SSG Keith Anderson, 1st BCT, 1st Cavalry Division Public Affairs)