Osan Air Base (K-55), is a United States Air Force facility located 4.7 mi SW of Osan-Ni, 40 mi S of Seoul, South Korea. The base is the home of the Pacific Air Forces 51st Fighter Wing, and a number of tenant units, including the headquarters for Seventh Air Force. There is also a large ROK Air Force presence on the base.
As the most forward deployed permanently-based wing in the Air Force, and equipped with A-10 Thunderbolt IIs and F-16 Fighting Falcons, the 51st Fighter Wing is charged with executing combat operations, receiving follow-on forces and defending the base from attack. As the air component to U.S. Forces Korea and Combined Forces Command, 7th Air Force provides the command and control structures and personnel necessary to deliver precise, persistent, combined air and space power in defense of the Republic of Korea.
Osan Air Base is one of two major Air Force installations operated by the United States in Korea, the other being Kunsan Air Base.
