I was a member of the Air Force Honor Guard, Washington, D.C. 1963-1967. Don’t remember if it was true of the Navy or not but the Air Force Band was full of 18-20 year old E8s and E9s.
http://www.freerepublic.com/focus/f-news/2143214/posts
You looked pretty sharp in your Zoomie uniform there at present arms (reply #7)...