U.S. Air Force Master Sgt. Shavahn Erby, 35th Aerospace Medicine Squadron optometry flight chief, listens to an Airman undergoing a mock senior airman below-the-zone promotion board at Misawa Air Base, Japan, Dec. 15, 2014. Erby assisted as a judge during the board and provided feedback to those competing as a way to help them prepare for their upcoming official BTZ board. (U.S. Air Force photo by Senior Airman Jose L. Hernandez-Domitilo)
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