A huge cube-shaped UFO buzzed a missile base twice in a day, a former fighter pilot has claimed.
The red object – more than 100m wide – terrified contractors who were working for an aerospace company.
It zoomed off but returned hours later – spooking guards at Vandenberg Air Force Base, California, which is currently a launch site for Elon Musk’s SpaceX.
Lt Ryan Graves, who is now an air safety campaigner, revealed the sighting while testifying under oath before the United States Congress.
The ex-navy pilot, who himself had close encounters with unknown objects on training missions, told politicians how the alien object flew towards the base from the ocean.
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