2015年3月27日，美国空军远征中心指挥官搭乘 C-12J 抵达嘉手纳空军基地。（A U.S. Air Force C-12J Huron, carrying Lt. Gen. Carlton D. Everhart II, 18th Air Force commander and Maj. Gen. Frederick Martin, USAF Expeditionary Center commander, arrives on Kadena Air Base, Japan, for their visit, March 27, 2015. While on Kadena, Everhart and Maj. Gen. Frederick Martin, U.S. Air Force Expeditionary Center commander, discussed with Airmen 18th AF and USAFEC's relationship and operational role.）