Wikipedia
Chief Master Sergeant (CMSgt) is the ninth, and highest, enlisted rank in the U.S. Air Force, just above Senior Master Sergeant, and is a senior non-commissioned officer rank. The official term is "Chief Master Sergeant" or "Chief".
Attaining the rank of Chief Master Sergeant is the pinnacle of an Air Force enlisted person's career. Some Chief Master Sergeants manage the efforts of all enlisted personnel within their unit or major subsection while others run major staff functions at higher headquarters levels. All Chief Master Sergeants are expected to serve as mentors for non-commissioned officers and junior enlisted members, and to serve as advisers to unit commanders and senior officers.
By federal law, roughly one percent of the Air Force enlisted force may hold the rank of chief master sergeant.
Usage examples of "chief master sergeant".
Not too surprising, as every weapon had been checked out personally by a senior weapons officer, a chief master sergeant, and an engineer from the contractor, individually run through a dozen simulations, and then handled like fresh fruit all the way into the bomb bay.
There an Air Force chief master sergeant snapped a salute, which Ryan, so imprinted by his brief months in the Marine Corps, returned smartly—.
The chief master sergeant looked to be pushing fifty, but he also looked like a man who could teach manners to an NFL linebacker.
The general put the receiver down and turned to the chief master sergeant, who had just received another note.
The senior chief master sergeant who served as Agni's Marine armorer looked up from a service manuals display, then snapped to attention behind the long, high counter.
Marty and General Pagel, both jacked, were at another table, with Top, Chief Master Sergeant Gilpatrick, anxiously fidgeting.