What makes a good Drum Major?

[Grump]

I have pondered the question about what makes a good DM and every time I think about being led it was in most cases an older person with a great deal of life experiences. Someone who could listen to the PM, and could remember what directions were being given, impeccable timing, who knew the music being played, which would mean they were either a drummer or a piper previous. The ability to think on your feet and on the move to get the people behind you out of a difficult situation. Being six foot six might be helpfull. I'm sure there must be more but alas I've run out.