The first in the group of eight KC-10 Extenders takes off Dec. 20 here in support of the ‘Elephant Walk’ exercise. An ‘Elephant Walk’ is a fundamental training element when preparing for Global Strike Missions. In all, the exercise involved 12 KC-10s as part of a global strike package exercise designed to demonstrate the capability of the Air Force to assemble a large refueling force. (U.S Air Force photo by Wayne Russell)