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OSAN AIR BASE, Republic of Korea (Nov. 18, 2015) - Staff Sgt. Robert Taylor, 51st Munitions Squadron F-16 armament floor chief, and Senior Airman Jacob Brown, 51st MUNS aircraft armament systems journeyman, put a 20-mm gun for an F-16 Fighting Falcon back together after performing maintenance. These maintainers from the 51st MUNS armament flight keep the F-16 Fighting Falcon weapon systems operational both day and night.