Subcommittees of the House Oversight and Accountability Committee held a joint hearing on alleged government research of unidentified anomalous phenomena (UAPs). Independent journalist Michael Shellenberger testified on an allegedly secret government program, "Immaculate Constellation," and he submitted a report by an anonymous whistleblower alleging that the Defense Department and intelligence community withheld evidence to the public about UAPs. Other witnesses included former Defense Department and NASA officials.