SGT Scott Callihan and SPEC. Clayton McDaniel perform maintenance on the M577s (Tactical Operations Command Tracked) 4.2 generator that powers its battery at Tactical Assembly Area Santa Barbara outside Wonapsan, Republic of Korea, Oct. 31, 1998. Callihan and McDaniel are generator mechanics from the1st Battalion, 23rd Infantry Regiment from Fort Lewis, Washington. 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