Peter Strzok worked 24 years for the CIA. His job title was Chief of their Counterespionage Group.

The FBI never had such a unit.

Strzok (pronounced Strock, rhymes with sock) led the FBI's investigation into Hillary Clinton. She used personal email for classified government business while she was Secretary of State.

The FBI's investigation into Russian interference in the election of Donald J. Trump as President was also led by Strzok.

A joint CIA/FBI position was created by Congress in 1996. Strzok was "a senior FBI official" by being the CIA’s Chief of Counterespionage.