Col at the time of his demise (may he always be remembered)obviously thought it not a major issue to wear protective head gear. He was his own man, & like the rest of us we are all ultimetly responsible for our own actions.
Nothing is forever, Col's memories, his legacies & never to foget his brilliant way of making ordinary folk not directly connected with aviation feel as tho there was time in Col's life for simply, you & me !
CW