Fuel Flight A U.S. KC-135 Stratotanker prepares to refuel an aircraft during operations with NATO allies near Constanta, Romania, April 10, 2021. SHARE IMAGE: Download Image: Full Size (3.06 MB) Tags: Air Force, nato Photo By: Air Force Senior Airman Jennifer Zima VIRIN: 210410-F-IM475-1004M.JPG Photo Gallery