The 911th Airlift Wing Chief’s Council presents Chief Master Sgt. Frank Monacelli, superintendent of the 911th Civil Engineering Squadron, with the Chief’s Bust during a promotion ceremony at the Pittsburgh International Airport Air Reserve Station, Pennsylvania, Oct. 5, 2019. Chief induction ceremonies like the one in honor of Monacelli are rare because, by congressional mandate, only one percent of the enlisted force may achieve the rank of chief master sergeant. (U.S. Air Force photo by Senior Airman Brandon Shuman)