U.S. Air Force Tech. Sgt. Bobby McMillian, 28th Aircraft Maintenance Squadron expediter, updates a munitions tracking sheet at Royal Air Force Fairford, U.K., June 7, 2017. Airmen from Ellsworth Air Force Base, S.D., are participating in bomber missions in the European theatre that provide opportunities to train with allies and partners in joint and multinational exercises such as BALTOPS and Saber Strike. (U.S. Air Force photo by Airman 1st Class Randahl J. Jenson)