Aviation history is littered with rare events like this one. Sometimes it's a 'wow' event and they get away with it, and earn the applause of the non-aviating gallery, and the astonished disappointment and anger of fellow pilots. Other times it can turn out very badly all round; they pay with their lives - perhaps the lives of innocent bystanders - and the destruction of a beautiful aircraft. This was about the height of a crop spraying run in a Pawnee or an AT-802. Not even the fire bombers normally get down to that level. I image the subsequent discussion with the chief pilot would have been interesting ... Possibly brief as well!