Conversation so far:
what did Luis Walter Alvarez do with aviation?
He learned to fly in 1933, later earning instrument and multi-engine ratings.
did he fly as his career?
two separate careers, one in science and one in aviation.
what were some of his careers that involved flying?
During World War II he led the development of multiple aviation-related technologies.
what else interesting happened with him in aviation?
Alvarez served on multiple high level advisory committees related to civilian and military aviation.

Question: what were his duties on that committee?
Self-contained rewrite: what were Luis Walter Alvarez's duties on the high level advisory committees?