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OSAN AIR BASE, GYEONGGIDO [KYONGGI-DO], South Korea (April 15, 2025) — Two U.S. Air Force B-1 Lancers fly in formation with two U.S. F-16 Fighting Falcons and two Republic of Korea Air Force F-35A Lightning IIs in airspace over the western region of ROK, April 16, 2025. The aircraft engaged in combined offensive and defensive counter air training together as part of a bilateral training event, reinforcing the strengthen tactics, techniques and procedures between the aircrew. (Photo courtesy of the Republic of Korea Air Force)