Thanks for the link.
This is the symbol that was between the bars and stripes.
Aviation support tech is what this insignia is.
Two chevrons below is a petty officer 2nd class
Three chevrons below is a petty officer first class
Did they look like this?
I'd have to try to figure out the stripes. I might have a photo somewhere of my dad in his Navy uniform. Maybe I can see it in the picture.