180920-F-QO224-1048
A U.S. Air Force F-15C Eagle assigned to RAF Lakenheath, England, prepares to receive fuel from a KC-135 Stratotanker from the 100th Air Refueling Wing, RAF Mildenhall, England, in support of exercise One Sky, over Poland Sept. 20, 2018. With the U.S. regularly conducting training with NATO allies and partners in the region, One Sky demonstrates the U.S. commitment to the NATO alliance and enhancing regional security. (U.S. Air Force photo by Airman 1st Class Brandon Esau)