A KC-10 Extender lowers its refueling boom to another KC-10 to simulate the transfer of fuel during an ‘Elephant Walk’ exercise Dec. 20 here. Members of the 32nd and 2nd Air Refueling Squadrons participated in the Employment Defense and Global Engagement exercise, which included mass simultaneous aerial refueling of four KC-10s by four other KC-10s. The exercise also involved members of the 514th Air Mobility Wing and the 305th Air Mobility Wing.