Princess and dragon hero is envisioned as slaying dragons even though, for instance, the Brothers Grimm had only a few tales of dragon and giant slayers among hundreds of tales. One of the earliest example of the motif comes from the Ancient Greek tale of Perseus, who rescued the princess Andromeda from Cetus, a sea monster often described as resembling a serpent or dragon. This was taken up into other Greek myths, such as Heracles, who rescued the princess Hesione of Troy from a similar sea monster. Most ancient versions depicted the dragon as the expression of a god's wrath: in Andromeda's case,
Caspian Sea Monster the KM and flag of the Soviet Navy on its fuselage. The CIA branded the aircraft the "Kaspian Monster" after the KM markings, later becoming known as the "Caspian Sea Monster", while it actually stood for "Korabl-maket" meaning "Prototype ship" in Russian. The discovery, at the height of the Cold War, greatly concerned the CIA, who set up a dedicated task force and developed a purpose-built unmanned drone, "Aqualine", just to determine what the secret behind the vehicle was. The KM was initially assumed to be an unfinished conventional aircraft, but it was quickly determined that the vehicle could not