Conversation so far:
When did Ayman Mohyeldin start his career in journalism?
Ayman Mohyeldin began his career in journalism working at NBC, as a desk assistant for the Washington D.C. bureau. Mohyeldin's first major assignments happened shortly after 9/11

Question: did he stay there for a while?
Self-contained rewrite: Did Ayman Mohyeldin stay at NBC for a while?