I do not have rank for Ron. He was not an officer.
His wife did send this interview that was done fairly recently that has some insight, however.
I played baseball with Ron, but I can probably get rank from one of his buddies I know.
Ron was a great patriot and a long time Government employee.

https://www.westpointcoh.org/interviews/do-it-right-the-first-time-a-navy-veteran-discusses-guided-missile-cruiser-service-off-vietnam-and-four-decades-in-emergency-management

Tom Jambrosic US ARMY Viet Nam ‘69