Enlisted award of the MSM in the Navy, Marine Corps, and Coast Guard is likewise typically limited to pay grades E-8 (e.g., USN/USCG senior chief petty officer and USMC master sergeant or first sergeant) and E-9 (e.g., USN/USCG master chief petty officer and USMC sergeant major or master gunnery sergeant), while award of the MSM to pay grade E-7 (e.g., USN/USCG chief petty officer and USMC gunnery sergeant) and below is very rare and by exception. In the Navy, Marine Corps, and Coast Guard, the awarding authority for the MSM must be either a flag officer or general officer holding the pay grade of O-7 or above. It is most common for Navy and Coast Guard master chief petty officers (typically command master chief petty officers) and Marine Corps master gunnery sergeants and sergeants major to receive the MSM as an end-of-tour award or upon retirement.