The original post: /r/aliens by /u/pirate_solo9 on 2024-10-10 19:16:21.

Hey Guys,

I found this declassified document on NSA and DoD’s website. Can someone please let me know what exactly it is?

https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/cryptologic-spectrum/communications_with_extraterrestrial.pdf