Neil Armstong ,the most famous of the astronauts on Apollo 11,has been called the ultimate professional. He was hired to do a job. He did the job and then he went home and kept quiet about it. In 40 years,he gave two interviews. Hedied in Agust 2012 . But how could the man who first set foot on the Moon, a hero to milions of people ,have remained such a mysterry?