Gunnery Sergeant David M. Birkby > Marine Music > Official Biography(04)

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Gunnery Sergeant David M. Birkby > Marine Music > Official Biography


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Marine Corps Gunnery Sergeant Rank USMC Gunnery Sergeant Rank Master Gunnery Sergeant Robert L. Trenum > Marine Music > Official USMC Master Gunnery Sergeant Rank Gunnery Sergeant David M. Birkby > Marine Music > Official Biography Master Gunnery Sergeant Darell E. Eley > Law Enforcement > Biography Gunnery Sgt. Jonathan T. Swaffer > Marine Corps Recruit Depot, Parris Master Gunnery Sergeant Jeffrey W. Ramsey > Training Command > Leaders