Pursuant to this article:
Navy Eliminating 241-Year-Old Rating System in New Enlisted Rank Overhaul
https://news.usni.org/2016/09/29/nav...-rank-overhaul
Are Marines *expected* to call for a "Petty Officer!" when they are hit?
I suppose it COULD be worse. They could have simply changed the rating to "Corpsperson"...