What is Frank's occupation in the novel, Where Is Joe Merchant?

By occupation Frank is a seaplane pilot, able to lift above the cares of the world at will. He leaves the earth "when things get too complicated. When I'm sitting at the controls of my flying boat over the ocean, there is no sense of urgency. The tempo allows me to do what needs to be done. When I am standing on the earth, I realize how fast things are really moving."