A Republic of Korea Air Force F-15K Slam Eagle fighter

A Republic of Korea Air Force F-15K Slam Eagle fighter aircraft taxis between a U. S. Marine Corps F/A-18C Hornet and a Finnish F-15 Hornet before a familiarization flight during exercise Red Flag-Alaska (RF-A) 19-1 at Eielson Air Force Base, Alaska, Oct. 5, 2018. Red Flag is a series of U.S. Pacific Air Force commander-directed field training exercise for U.S. and coalition forces to provide a realistic joint offensive counter-air, interdiction, close air support and large-force employment training in a simulated combat environment. (U.S. Marine Corps photo illustration by Sergeant Maria A. Noyola)(This photo has been altered for security purposes by blurring the aircraft identification tags)