Memories, in my GA days back in the 80's dealt with Don in a matter where I believed and supported a fellow pilot regards an incident in the nor'west, Don provided enough "input" that I had to go back and confirm with my colleague at which point he admitted that "maybe Don's description is more accurate..." or similar.
Fell on my sword to Don, he would have been within rights to have a go but didn't and things were sorted out - but couldn't help thinking that as a youngster in GA a few more with Don's approach wouldn't be a bad thing.
From that one interaction was surprise how sad I was to hear of Don and the MU2 accident.
Off track another that impressed was John Marshall, SA/NT from memory who dropped into the NW for renewals at times, like Don comanded respect IMHO.
Cheers.