David Charles Grusch is a former United States Air Force officer and intelligence official who served at the National Geospatial-Intelligence Agency (NGA) and the National Reconnaissance Office (NRO). In June 2023, he filed a whistleblower complaint alleging that the U.S. government has been secretly recovering and reverse-engineering crashed non-human craft for decades. He testified before Congress under oath in July 2023, stating that the government possesses "non-human biologics" recovered from crash sites. His testimony triggered renewed congressional investigations into UAP programs.