美国犹他州上空，美国空军俄勒冈州空中国民警卫队第173战斗机联队（173FW）一架 F-15C 战斗机空中加油完毕飞离 KC-135 加油机。(An F-15 Eagle from the 173rd Fighter Wing, Oregon Air National Guard, flies off the wing of a Utah ANG KC-135 after receiving fuel during a training operation Jan 31. near Klamath Falls OR. The 151st Air Refueling Wing routinely supports air operations across the western United States, in this case an eight ship of F-15s from the 173rd.)
