NELLIS AIR FORCE BASE, Nev. – The 926th Aircraft Maintenance Squadron holds a promotion ceremony June 4 at the base theater to recognize Matthew Bennato’s promotion to Chief Master Sergeant. Roughly one percent of the Air Force enlisted force holds the rank of chief master sergeant. Bennato is the F-16 Aircraft Maintenance Unit Superintendent. (U.S. Air Force photo by Senior Airman Brett Clashman)