UFO vs. UAP: What's the difference?

(NewsNation) — UFOs and UAPs have become common acronyms in news headlines as members of Congress have called for more transparency on what the government knows — and doesn't know — about unidentified aerial phenomena, previously the subjects of conspiracy theories and grainy images.

Members of Congress have led a bipartisan effort to investigate and declassify government documents containing information regarding such unidentified phenomena following the testimony of UFO whistleblower David Grusch, a former Air Force and intelligence officer, before a House Oversight subcommittee in July 2023.

Grusch testified the U.S. is concealing a longstanding program that retrieves and reverse engineers unidentified flying objects.

Grusch said he brought his concerns to the Office of the Inspector