Conversation so far:
What did John O. Brennan do as an advisor to Obama?
In August 2009, Brennan criticized some Bush-administration anti-terror policies.
When did John O. Brennan begin as Counterterrorism advisor to obama?
01/20/2009

Question: What else did he do?
Self-contained rewrite: What else did John O. Brennan do while working under Obama besides criticizing anti-terror polices?