David "Jaybird" Sterling, Platoon Chief and machinist mate second class, waved and pushed his rebreather out of his mouth.

Abbreviated as MM (e. g., MM 1 sailor is a petty officer first class machinist's mate).

McIntyre was a machinist mate on the Sycorax.

After graduating from high school in Florida in 1942, he became a first class petty officer and machinist mate in the U.S. Navy.

You wanted to help the machinist mates with a pump?

The ship required constant maintenance, which was why they had so many machinist mates onboard.

The machinist mate was missing his right arm from the elbow down, a legacy of the previous mission's sole space battle.

Getting to the failed pump had eventually required three machinist mates and himself, all stuffed into cramped quarters and often with elbows in each other's faces.

Kennedy, who had been on the Harvard University varsity swim team, used a life jacket strap clenched between his teeth to tow his badly-burned senior enlisted machinist mate, MM1 Patrick McMahon.

She was a machinist mate for the Naval Reserve unit called the Waves, Women Accepted for Voluntary Emergency Service.