Kind of being pedantic here but the Navy has Ratings to describe their jobs, not MOS.I was a CE (Construction Electrician) in the SeaBees.The guys firing that cannon are probably GMs (Gunner Mates).
Sorry, I'll update the title. I just thought the mental picture of, "Chief, make some space for me to pull in." was humorous.
What an itty bitty little canon.
You know you wouldn't kick it out of your barn for eating crackers;)
It looks like the 1st Class in the photo is a YN.
I'll confess this is more intended as a "humorous" post.
Found the original pic, zoomed in and the 1st class is a GM.The gun is a 40mm Saluting cannon, these are made to fire blanks only.
Awww, that's not as much fun as putting a few shells in a mega-yacht.