I consider Dr Hoover to be a credible source, so this revelation is quite important:
QuoteOn June 2, 2023, former NASA scientist Dr. Richard Hoover explains how he, in the early 1980s, innocently stumbled across hundreds of classified UFO references in the card catalog at the Redstone Scientific Information Center (RSIC), located at the Redstone Arsenal in Huntsville, Alabama. The RSIC was a walk-in library containing three floors of scientific books and journals, and it was regarded as one of the best rocket science libraries in the entire world. Classified information was located on the third floor, which is where Dr. Hoover made his accidental "UFO" discovery while searching for "uranium" in the RSIC card catalog. Sadly, the RSIC closed its doors on September 30, 2019 and was reported to open as a virtual library.
https://www.youtube.com/watch?v=B5d-6VIXCuU (https://www.youtube.com/watch?v=B5d-6VIXCuU)