SGT Del Christenson works with a Korean Citizen to sling load a M1A1 Abrams Tank to a flat bed rail car at the Camp Carroll Rail Head in Korea, on Oct. 26, 1998. Christenson, of Alpha Company 1ST Battalion, 33rd Armored Regiment, is a participant in a railhead exercise that will move the 33rd Armored Regiment's equipment to Camp Casey in support of Foal Eagle '98. Foal Eagle is a field training exercise that takes place once a year in Korea