This is, to my knowledge, the very first Group of Interest (GoI) format article ever created- a United States Air Force report about SCP-173. It was first posted in 2007 by an anonymous 4chan user to the SCP-173 thread, as seen at the Bluesoul archive of the SCP 4chan thread:
https://web.archive.org/web/20230328175111/http://scparchives.bluesoul.net/x/scp/140042.html
It was originally posted to the SCP Wiki by Ziakial in May 2023:
https://web.archive.org/web/20230515225910/https://scp-wiki.wikidot.com/usaf-file-c203-92b
And was deleted later that month after falling to -10, and for being posted by someone other than it's original author. It was reposted and deleted in May 2025 by another user I've yet to identify, which is what inspired me to archive it here. This is a pretty faithful recreation of the article, with some small spelling errors corrected and a bit nicer formatting.