A B-2A Spirit bomber assigned to the 509th Bomb Wing leads a delta formation consisting of two F-15C Eagles assigned to the 48th Fighter Wing and two Royal Air Force F-35B Lightnings as they conduct aerial operations over the North Sea Sept. 16, 2019. The 48th Fighter Wing and the Royal Air Force routinely train with integrated 4th and 5th generation capabilities to deliver full spectrum air combat support to European allies and partners. (U.S. Air Force photo/ Tech. Sgt. Matthew Plew)