U.S. Army SPEC. Lyle Lumbar, North Dakota National Guard (NDANG), digs a whole in the center of an earth lodge on Aug. 4, 2004 at Fraine Barracks, North Dakota, to be used as a fire pit and the only source of heat during part of the Innovative Readiness Training (IRT) program. An earth lodge is part of an authentic Mandan Indian cultural display being constructed during the Lewis and Clark Bicentennial events. (U.S. Army photo by STAFF SGT. Billie Jo Lorius) (Released)