Pentagon cannot explain more than 170 fresh UFO reports, new document reveals
The remaining 171 cases are still "uncharacterized and unattributed," due to a lack of detailed data
US National Intelligence Director admits possibility of aliens
Haines’s office released a much-anticipated assessment of 144 reports of UFOs originating from U.S. government sources
UFO Sightings Are Rising Substantially (infographic)
U.S. intelligence services are due to deliver a groundbreaking report on "unidentified aerial phenomena" to Congress next month