US government employees have been injured by UFOs and the US government has conducted a secret UFO retrieval program, a former department of defense official told a congressional committee on Wednesday, though the hearing lacked any direct evidence to back up the startling claims.

The hearing on unidentified anomalous phenomena (UAP), which has become the more accepted term for UFO, also heard that the government has a “huge amount” of secret information on UAPs, including “photos, video, photos, other information”. But it also learned, following a query from Colorado congresswoman Lauren Boebert, that there is no evidence of aliens having a secret underwater “base” on this planet.