Would-be UFO whistleblower died of accidental drug overdose after agreeing to testify to Congress –The FBI indicated in a statement that Sullivan’s death could be under investigation along with the dozen other missing or dead U.S. scientists. | 25 April 2026 | An Air Force veteran who agreed to testify before Congress about secret government UFO programs died just months before the hearings of an accidental drug overdose, The Post has learned. Matthew James Sullivan, 39, died at his home in Falls Church, Va., on May 12, 2024, from a lethal mix of alcohol, alprazolam, cyclobenzaprine and imipramine, according to the Northern District Office of the Chief Medical Examiner. The mysterious death is of “grave concern” to Rep. Eric Burlison (R-Mo.), who referred the matter for investigation to the FBI due to “implications for national security,” according to a letter obtained by The Post… Sullivan earned a Bronze Star for valor in Operation Enduring Freedom and later worked for the Air Force Intelligence Agency, National Air and Space Intelligence Center, and the National Security Agency, according to an obituary.