LTC James R. Bartran briefs the platoon commander's of Task Force 123 during a Rock Drill at Tactical Assembly Area Santa Barbara outside Wonapsan, Republic of Korea, Oct. 31, 1998. Bartran is the Battalion Commander for the 1ST Battalion, 23rd Infantry Regiment from the 3rd Brigade, 2nd Infantry Division from Fort Lewis, Washington. A Rock Drill is the use of a terrain model to walk step-by-step discussing an operation in a small group forum. The 3rd Brigade is in Korea as part of Foal Eagle '98, a combined exercise involving the Republic of Korea Army and the United States Armed Forces