; (B) to any vehicle that serves as a mobile command vehicle, and to any personnel therein; (C) to any vehicle, including any Federal, State, local, or rented vehicle, that the Secretary deploys in support of protective operations and to any law enforcement personnel therein while such personnel are engaged in such protective operations; and (D) in instances in which an immediate threat to the life or safety of a uniformed law enforcement officer of the Department makes activating a body-worn camera or dashboard camera impossible or dangerous, except that in such an instance such officer shall activate any such camera at the first reasonable opportunity to do so. (b) Retention of footage (1) In general Body camera and dashboard camera video footage shall be retained by the law enforcement agency that employs the officer whose camera captured the footage, or an authorized agent thereof, for 6 months after the date it was recorded, after which time such footage shall be permanently deleted. (2) Additional retention requirements Notwithstanding the retention and deletion requirements in paragraph (1)— (A) video footage shall be automatically retained for not less than 3 years if the video footage captures an interaction or event involving— (i) any use of force; or (ii) an encounter about which a complaint has been registered by a subject of the video footage; and (B) body camera video footage shall also be retained for not less than 3 years if a longer retention period is voluntarily requested by— (i) the uniformed officer whose body camera recorded the video footage, if that officer reasonably asserts the video footage has evidentiary or exculpatory value in an ongoing investigation; (ii) any uniformed officer who is a subject of the video footage, if that officer reasonably asserts the video footage has evidentiary or exculpatory value