Of the three mentioned in your post, I only knew Dave Custer well. I had heard of the other two.
Dave served on the ORI team with myself, Tilley, Williams, Cable, Olszewski, et. al.
Great guy. Married a Japanese girl so it would not surprise me if they were living in Japan. Havn't heard anything from him since I sold his house for him in NORVA back in the 80s.