A C-17 Globlemaster III, receives fuel from a KC-135 Stratotanker during a refueling mission as part of exercise Talisman Saber 2017, July 12, 2017, over the Pacific ocean. Talisman Saber 2017 is a joint exercise between the U.S. and Australia Defense Force. (U.S. Air Force photo/Staff Sgt. Rachel Waller)