In a world full of world records, endurance — or “time aloft” — has always fascinated me. Within that realm, there’s one particularly compelling story that even many pilots don’t know about. The technology used for this record-setting flight was off-the-shelf, unremarkable. The pilots were just ordinary guys. And the aircraft? A plain-vanilla trainer. Yet they set the bar so high that their feat may never be equaled. More than a half century later, nobody’s even come close.