Conversation so far:
When did Jimmy Doolittle first get involved with the space program?
Doolittle became acquainted with the field of space science in its infancy.
What drove Jimmy Doolittle's interest in the space program?
He wrote in his autobiography, I became interested in rocket development in the 1930s when I met Robert H. Goddard.
Did Jimmy Doolittle contribute anything to the space program during the time after meeting Robert H Goddard?
Shortly after World War II, Doolittle spoke to an American Rocket Society conference at which a large number interested in rocketry attended.
Did he do anything during the war?
On 5 January 1946, Doolittle reverted to inactive reserve status in the Army Air Forces in the grade of lieutenant general
Did Jimmy Doolittle serve on any boards or panels for the space program?
In 1956, he was appointed chairman of the National Advisory Committee for Aeronautics because the previous chairman, Jerome C. Hunsaker, thought Doolittle to be more sympathetic to the rocket

Question: Did he accomplish anything specific during this time?
Self-contained rewrite: Did Jimmy Doolittle accomplish anything specific during the time as chairman of the National Advisory Committe for Aeronautics?