This is sad, sad news. Saw so much of Jon for years in #
boxing# and spent many nights together on the road back when. Last spent time together in Louisville for Ali's funeral. On that trip, Jon almost stepped on what looked to be a beautiful, dead, Monarch butterfly while walking with a group of friends. He picked the butterfly up and it quivered. He said, "fly Ali, fly". The butterfly flew out of his hand. Lost touch over the last few years, but never forgot that moment and those times. Rest in peace, my old friend. Fly upward.