Former NSA senior analyst Thomas Drake.
https://en.wikipedia.org/wiki/Thomas_A._Drake
Not only does he have immense military and NSA intelligence background, he and his family was personally targeted by the corrupt Obama administration and their corrupted agencies. His home was raided and guns were pointed at him and his family. He was indicted, but refused to plead guilty. He finally only admitted to a misdemeanor.
Friends describe him as a genius, very detailed, and a strategic as well as tactical thinker.
Notice the pin lapel.
Again.
Actually, I believe Q is more than one person and I never try to identify any of them, except Trump, because they choose not to identify themselves.