Three U.S. Air Force A-10 Thunderbolt II aircraft fly in formation in preparation for RED FLAG-Alaska (RF-A) 19-2 at Eielson Air Force Base, Alaska, June 6, 2019. RF-A is a series of Pacific Air Forces commander-directed field training exercises for U.S. and partner nation forces, providing combined offensive counter-air, interdiction, close air support and large force employment training in a simulated combat environment. (U.S. Air Force photo by Airman 1st Class Aaron Larue Guerrisky)