Senior Master Sgt. Marcus Wimberly

by Staff Sgt. Benjamin Raughton
Osan Air Base

OSAN AIR BASE, Republic of Korea -- U.S. Air Force Senior Master Sgt. Marcus Wimberly, 51st Maintenance Group, celebrates after being notified of his promotion to chief master sergeant on Osan Air Base, Republic of Korea, Nov. 30, 2018. Only the top one percent of the Air Force enlisted corps may hold the rank of chief master sergeant. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)

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