There are so many things wrong with rapper 50 Cent wearing a Marine Corps Gunnery Sergeant’s uniform and a naval officer’s cover that I won’t bother pointing them all out:

50 Cent, Marine Corps Gunnery Sergeant or Naval Officer?

You might want to read what the good folks over at the Terminal Lance forum have to say. (Caution: Sailors and Marines can get a little salty in their wordage, be warned. . . )