A former Defense Department official has claimed that the United States has conducted programs aimed at retrieving UFOs to study and understand extraterrestrial technology. On Wednesday, a congressional hearing was held as part of an investigation into UFOs,

Questions about whether we're alone or if there is someone else out there used to be just for conspiracy theories. Now, whistleblowers have the attention of the U.S. Congress.

More than a year has passed since U.S. House members last heard testimony about UFOs and what the Department of Defense may be concealing about them.