5. Battle of Los Angeles

On February 24 and 25, 1942 unknown and unidentified flying object appeared in the skies over Los Angeles, California. It was less than three months after Pearl Harbor and

the U.S. entry into World War II. The United States military could not identify the enemy aircrafts, so they opened up with a massive anti-aircraft artillery barrage. Prior to
the event, a Japanese submarine I-17 surfaced and fired on an oil production facility near Santa Barbara. This created the repositioning of many military and naval troops on
the western coast of the U.S. When unidentified objects were reported in the skies above Los Angles a total blackout was ordered and air raid sirens were set off.

The 37th Coast Artillery Brigade began firing 12.8-pound anti-aircraft shells at the objects. Three civilians died from friendly fire and many buildings were damaged, a battle was fought in Los Angeles. Initially the target of the aerial barrage was thought to be an attacking force from Japan, but it was later suggested to be imaginary and a case of war nerves, a lost weather balloon, a blimp, a Japanese fire balloon or a psychological warfare technique, staged for the benefit of coastal industrial sites, another common claim in an extraterrestrial craft. The incident remains a complete mystery.