Conversation so far:
When was Fred Rogers born?
Fred Rogers was born March 20, 1928.
Where was Fred Rogers born?
Fred Rogers was born in Latrobe, Pennsylvania.
Who were Fred Rogers' parents?
Fred Rogers' parents were James and Nancy Rogers.
Did Fred Rogers have any siblings?
Fred Rogers had a sister, Elaine, whom the Rogerses adopted when he was 11 years old.
Where did Fred Rogers go to school?
Fred Rogers attended Latrobe High School, Dartmouth College, Rollins College, and Pittsburgh Theological Seminary.
What did Fred Rogers study?
Fred Rogers has a degree in music composition and is an ordained minister.

Question: when did he become a pilot?
Self-contained rewrite: When did Fred Rogers become a pilot?