Chief Master Sergeant (last name) A chief master sergeant in the U.S. Air Force is the highest senior non-commissioned officer rank and directly above senior master sergeant. It is equivalent to the rank of sergeant major in the Army, master gunnery sergeant/sergeant major in the Marines, and master chief petty officer in the Navy/Coast Guard.
Pivotal Response Treatment (PRT) is a naturalistic intervention based on the principles and practices of applied behavior analysis (ABA) and developmental approaches.
1 The arrhythmias being treated reflect the primary cardiac condition and not an irreversible secondary medical illness;  Prompt ICD therapy confers the likelihood of added survival with meaningful quality of life and without post-arrest disabilities (e.g., cognitive); and the patient concurs with this approach.