In this episode of "Mysteries of UFOs," we explore the mysterious phenomenon of Foo Fighters—unidentified flying objects reported by Allied pilots during World War II. These glowing orbs and lights followed aircraft, displaying unusual and intelligent movement that baffled those who witnessed them. Initially thought to be secret enemy weapons, investigations after the war failed to provide concrete explanations. Some theorize they were natural atmospheric phenomena like St. Elmo's Fire, while others suggest advanced enemy technology or even extraterrestrial involvement. The Foo Fighters contributed to the early UFO lore and continue to intrigue researchers and enthusiasts today.