"A spokesperson there told CyberScoop in an emailed statement that its National Intelligence Manager for the Air Domain, also known as NIM-Aviation, “erroneously posted an unofficial and incorrect logo.”"

So an office of the Department of National Intelligence simply made a "oops" by uploading the logo with a UFO on it.

Lol ok

https://www.cyberscoop.com/odni-ufo-new-seal-in-error/