Formation Flight Four U.S. Air Force F-16C Fighting Falcons and four Swedish air force JAS 39 Gripens fly in formation behind a U.S. Air Force KC-135 Stratotanker during aerial refueling training in Swedish airspace, Feb. 8, 2018. Air Force photo by Airman 1st Class Luke Milano SHARE IMAGE: Download Image: Full Size (2.12 MB) Tags: training, European Security, European Command, Eucom, AIR FORCE, Airmen , European Security Special Photo By: Senior Airman Luke Milano VIRIN: 180208-F-VG386-1155C.JPG Photo Gallery