In 2023, Secretary of State Marco Rubio explained that U.S. officials with "very high" security clearances who "did really important work for the government" have come forward with firsthand knowledge that the United States has "recovered exotic materials" and conducted reverse engineering to advance our own "defenses and technologies". Rubio also stated that some of these individuals are publicly known, while others remain undisclosed due to fears for their own careers and personal safety. Cong