He was just dozing off when the fat lady up the aisle let out a scream. A huge reptilian head had materialized out of nowhere and was hanging in air peering about uncertainly. A scaly green body followed four feet away complete with long razor talons heavy hind legs and a whiplash tail with a needle at the end. For a moment the creature floated upside down legs thrashing. Then the head and body joined executed a horizontal pirouette and settled gently to the floor like an eight-foot circus balloon.