I thought for a second the high schoolers might be triggered knowing people with guns were there once. We lived in the area in the early 50’s and my dad attended some sort of training there. Industrial War College maybe? We went to Ft. Ord for a weapons demo one time. AWESOME! I had a staple put in my forehead at the dispensary there. Think IIRC 2nd/3rd grade time frame.
The Naval Post Graduate School is located there (founded in 1909) so that might be the place your father went to.