A Republic of Korea Air Force (ROKAF) F-16D taxis down the Eielson Air Force Base Alaska, flightline Aug. 10, 2015 as part of the first simulated combat sortie of RED FLAG-Alaska, 15-3. The ROKAF is participating in this Pacific Air Forces commander-directed field training exercise 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 Kyle Johnson/Released)