UFOs in America: A short history of aliens and sightings | CNN
The Unexplained Phenomena of the U.F.O. Report | The New Yorker
UFO Report: No Sign Of Aliens, But 143 Mystery Objects Defy Explanation : NPR
Unidentified flying object | History, Sightings, & Facts | Britannica
Did Iranian Fighters Battle UFOs?
Letters to the Air Force on UFOs" by Bill Adler
U.S. Navy says it's tracking UFOs - The San Diego Union-Tribune
Air Force Declassification Office > Top Flight Documents > Unidentified Flying Objects
UFO Sightings: They Deserve to Be Taken More Seriously - Bloomberg
How UFO Sightings Went From Conspiracy Theory To A Serious Government Inquiry : NPR
UFO Over Hawaii Causes F-22s To Scramble | iHeart
What It's Like to Be at the 24th International UFO Congress
UFOs: Natural Explanations – Pieces of History
Public Interest in UFOs Persists 50 Years After Project Blue Book Termination | National Archives
US Congress To Hold First Public Hearing On UFOs in 50 Years. Here's Why
UFO Sighting Photos: 10 Unexplained Pictures From History | Time
These 5 UFO Traits, Captured on Video by Navy Fighters, Defy Explanation - HISTORY
My time as a UFO investigator for the government - BBC Future
Avro Canada VZ-9 Avrocar - Wikipedia
Air Force UFO files hit the web
Mexico Air Force video creates UFO stir - ABC News
Declassified at Last: Air Force's Supersonic Flying Saucer Schematics | WIRED
UFOs: Canadian air force responds with CF-18 fighter jets | CTV News
Pentagon now reports about 400 UFO encounters: 'We want to know what's out there' - ABC News
Area 51 | Description, History, Location, & Facts | Britannica
