The Sixth Army and U.S. Indian Service join forces to bring a medical caravan to the rescue of Navajo villages, in northeastern Ariz., isolated by continuing snow storms, Feb. 16, 1949. Here they halt in the lee of towering black buttes while their scouts reconnoiter the rugged trail that leads to a snow-imprisoned village ahead. The medical unit set up to give first aid and combat malnutrition and pneumonia. A few cases of diptheria have been reported. (AP Photo/U.S. Army/Pool)