(a) A law enforcement agency may not retain images captured by an unmanned aircraft system unless retention of the image is required (1) as part of an investigation or prosecution;
(2) for training purposes; or
(3) by federal or state law or by municipal ordinance.
(b) Images that may not be retained under (a) of this section are confidential and are not public records under AS 40.25.100 — 40.25.295.