菲律宾克拉克空军基地,雷霆对抗 89-5 联合空中作战演习中,美国空军第18战术战斗机联队(18TFW)的 F-15C 战斗机机群在夜间维护。(F-15 Eagle aircraft stand on the flight line during night maintenance operations. The planes are being serviced by maintenance crew members in preparation for their participation in Exercise Cope Thunder 89-5.)