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![The Heenes' Saucer-Shaped Balloon]()
Richard Heene built an experimental weathercraft and unleashed it on an unsuspecting world. The resulting news attention gripped the country, and wrapped him and his family up in the "balloon boy" scandal.![Is That a UFO or a Plane?]()
An RQ-3 Darkstar prototype on display at the Museum of Flight in Seattle.![Is That a UFO or a Plane?]()
An RQ-3 Darkstar flies over Edwards Air Force Base in southern California in June 1998.![Is That a UFO or a Plane?]()
A U-2 takes off from an undisclosed location during Operation Iraqi Freedom in April 2003.![Is That a UFO or a Plane?]()
Air Force pilot Gary Powers in 1959, one year before his U-2 was shot down over the Soviet Union and he was captured.![Is That a UFO or a Plane?]()
A U.S. Air Force Lockheed SR-71 Blackbird jet on a runway in 1995.![Is That a UFO or a Plane?]()
A U.S. Air Force Lockheed SR-71 Blackbird jet in flight in 1994.![Is That a UFO or a Plane?]()
A screen grab of a civilian video of a 2006 test flight that revealed the existence of Lockheed Martin's P-791 lighter-than-air craft.![Is That a UFO or a Plane?]()
A U.S. Air Force F-117A Nighthawk stealth fighter jet in flight in 1998.![Is That a UFO or a Plane?]()
A U.S. Air Force F-117A Nighthawk stealth fighter jet lands in Kuwait after a mission over Iraq on March 22, 2003, two days into Operation Iraqi Freedom.![Is That a UFO or a Plane?]()
A U.S. Air Force B-2 Spirit stealth jet bomber, viewed edge-on in flight in October 2000.![Is That a UFO or a Plane?]()
The serrated wings of a U.S. Air Force B-2 Spirit stealth jet bomber in flight in November 2001.Is That a UFO or a Plane?
UFOs could be alien space craft -- or they could be unknown military vehicles, or experimental weather balloons. Here, a variety of secret aircraft mistaken for UFOs.
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- Is That a UFO or a Plane?
