For over a decade, the program, now tucked inside the Office of Naval Intelligence, has discussed mysterious events in classified briefings.

Mr. Reid, the former Democratic senator from Nevada who pushed for funding the earlier U.F.O. program when he was the majority leader, said he believed that crashes of objects of unknown origin may have occurred and that retrieved materials should be studied.

“After looking into this, I came to the conclusion that there were reports — some were substantive, some not so substantive — that there were actual materials that the government and the private sector had in their possession,” Mr. Reid said in an interview

No crash artifacts have been publicly produced for independent verification.

Eric W. Davis, an astrophysicist who worked as a subcontractor and then a consultant for the Pentagon U.F.O. program since 2007, said that, in some cases, examination of the materials had so far failed to determine their source and led him to conclude, “We couldn’t make it ourselves.”

Mr. Davis, who now works for Aerospace Corporation, a defense contractor, said he gave a classified briefing to a Defense Department agency as recently as March about retrievals from “off-world vehicles not made on this earth.”

Mr. Davis said he also gave classified briefings on retrievals of unexplained objects to staff members of the Senate Armed Services Committee on Oct. 21, 2019, and to staff members of the Senate Intelligence Committee two days later.

https://www.nytimes.com/2020/07/23/us/politics/pentagon-ufo-harry-reid-navy.html