U.S. Air Force Maj. Nathaniel Lightfoot, 71st Fighter Training Squadron aggressor pilot, returns from a combat training mission during ATLANTICTRIDENT 17 at Joint Base Langley-Eustis, Va., April 18, 2016. The 1st Fighter Wing hosted the exercise to focus on greater integration of the U.S. Air Force's fifth-generation capabilities. (U.S. Air Force photo/Staff Sgt. Natasha Stannard)