#9 The Phoenix Lights
On March 13, 1997, people claimed to see strange lights in the skies over Phoenix. These lights were reportedly in a downward V-shape that moved slowly without a sound.
Many said that it was a secret military spacecraft, while some called it a natural phenomenon.
Despite several recollections of this particular night, no one could point out the exact characteristics of these unusual lights.
Some went to the extent of calling it an alien invasion that the U.S. government suppressed.