Colombian Air Force Kfir fighter jets fly in a formation during Red Flag 18-3 at Nellis Air Force Base, Nev., July 26, 2018. Red Flag is the U.S. Air Force's premier air-to-air combat training exercise. Red Flag gives aircrew an opportunity to safely experience advanced, relevant and realistic combat like situations in a controlled environment. (U.S. Air Force photo by Staff Sgt. Angela Ruiz)