The USS Eldridge disappearance story remains one of the 20th century’s most persistent military myths, despite no evidence of invisibility, teleportation, or time travel. The legend claimed that the ship had been used in a secret experiment at the Philadelphia Naval Shipyard. The Philadelphia experiment legend states that the ship was drydocked at the Philadelphia Naval Shipyard in 1943 and fitted with a secret device that produced a green glow before making the vessel disappear. The story also claimed that the civilian merchant ship SS Andrew Furuseth witnessed the USS Eldridge later appearing at the Naval Operating Base in Norfolk, Virginia. French author Jacques Vallée examined the story’s persistence in his 1994 paper “Anatomy of a Hoax: The Philadelphia Experiment Fifty Years Later.”