I have a test where I am given the following article, what is an answer for the question: What department does Eric clerk for? ?

Eric O'Neill is a young FBI employee assigned to work undercover as a clerk to Robert Hanssen, a senior agent he is told is suspected of being a sexual deviant. Hanssen has been recalled from a detail post at the State Department to FBI headquarters ostensibly to head up a new division specializing in Information Assurance.
Initially, Hanssen insists on a strict formality between the two men. He frequently rails against the bureaucracy of the FBI and complains that only those who regularly "shoot guns" are considered for senior positions instead of those, like himself, who are involved in vital national security matters. He calls the bureau's information technology systems antiquated and laments the lack of coordination and information exchange with other intelligence agencies.
Eventually, Hanssen becomes a friend and mentor to O'Neill and takes a personal interest in him and his wife Juliana, who is suspicious of Hanssen and resents his intrusions. A devout Catholic who is also a member of Opus Dei, Hanssen urges O'Neill, a lapsed Catholic, and his secular East German-born wife to become active churchgoers.

Information Assurance