Say What?

This sentence in the Democratic Party Platform jumped off the page for me (page 37):

            "We will work for pay parity so that compensation for military service is more in line with that of the private sector."

Huh? Let's set aside the question of whether this parity will be based solely on wages or if it will also incorporate the not insignificant non-wage benefits members of the military receive. What I really want to know is, what's the private sector equivalent of a Marine Gunnery Sergeant?