Best of the best
U.S. Air Force Col. Christopher Amrhein, 18th Wing vice commander, congratulates Senior Master Sgt. Collin Baulch, 18th Munitions Squadron production flight chief, for his selection to chief master sergeant Dec. 8, 2016, at Kadena Air Base, Japan. Through exemplary leadership, the best senior noncommissioned officers progress to the rank of chief master sergeant. (U.S. Air Force photo by Senior Airman Lynette M. Rolen/Released)