Pilot : a person who operates the flying controls of an aircraft.Forerunner : a person or thing that precedes the coming or development of someone or something else.Steward : a person employed to look after the passengers on a ship, aircraft, or train.Messenger : a person who carries a message or is employed to carry messages.Harbinger : a person or thing that announces or signals the approach of another.Synonym of Harbinger is Messenger