Senior Master Sergeant is a military rank used in the United States Air Force and is equivalent to the eighth enlisted rank in the Air Force. It is also abbreviated as SMSgt and referred to as a Senior Non-Commissioned Officer. There are several synonyms for the term Senior Master Sergeant that can be used interchangeably. Some of these synonyms include Chief Master Sergeant (CMSgt), Command Chief Master Sergeant, Group Superintendent, and Squadron Superintendent. These synonyms are used to refer to Senior Master Sergeants in different contexts and situations. Regardless of the synonym used, Senior Master Sergeants occupy a critical position in the Air Force, providing leadership, supervision, and mentorship to junior enlisted members and ensuring mission success.