; or (II) the Attorney General has a reasonable belief that the life or safety of a person is threatened and such contents are sought for the purpose of assisting that person. (iii) Pursuant to paragraph (5), the person related to the queried term consents to such access or dissemination. (D) Limitation on electronic surveillance of United States persons If the Attorney General determines that it is necessary to conduct electronic surveillance on a known United States person who is related to a term used in a query of communications acquired under subsection (a), the Attorney General may only conduct such electronic surveillance using authority provided under other provisions of law. (E) Simultaneous access of FBI databases The Director of the Federal Bureau of Investigation shall ensure that all available investigative or intelligence databases of the Federal Bureau of Investigation are simultaneously accessed when the Bureau properly uses an information system of the Bureau to determine whether information exists in such a database. Regardless of any positive result that may be returned pursuant to such access, the requirements of this subsection shall apply. (F) Delegation The Attorney General shall delegate the authority under this paragraph to the fewest number of officials that the Attorney General determines practicable. (2) Authorized purposes for queries A collection of communications acquired under subsection (a) may only be queried for legitimate national security purposes or legitimate law enforcement purposes. (3) Retention of auditable records The Attorney General and each Director concerned shall retain records of queries that return a positive result from a collection of communications acquired under subsection (a). Such records shall— (A) include such queries for not less than 5 years after the date on which the query is made