In bee society, drones follow the queen when she is flying through the air.

Anti-aircraft training started out with a piloted airplane pulling a banner far behind it, but problems still occurred.

Simple radio-controls could operate servo's on a target plane, so...a control plane with a pilot and one crewman would take off. A target plane with a pilot would take off just behind them.

Just beore reaching the target area, the pilot in the target plane would parachute out.

Since the plane in the rear followed the control plane, unmanned target-planes became known as drones.

I read that on vectorsite