A former SpaceX executive, who worked at the aerospace company for 19 years, said the public has a different perception of CEO Elon Musk.

“We see him differently during work and I think the public has a different perception,” Hans Koenigsmann, a SpaceX vice president, told Insider.

As the richest man in the world, with a fortune of $292 billion, Musk is constantly in the public eye.