Ellen Church was staring up at the sky, watching the aerial stunt pilots switch from plane to plane in mid-flight using only a rope ladder. One daring woman steadied her controls, and climbed right out of the cockpit and on to the wing of her plane, gazing down at the fields of corn and the cheering crowd at the Cresco Iowa county fair. “If there was any one thing I wanted to do, it was to fly one of those machines just the way she did,” Ellen Church recalled. Ellen Church was the first stewardess. She pitched the notion that having nurses on board would certainly ease passengers wary of flying that there was medical help on board, and she thought it could help…