The Magic Kingdom was the first themed area built at Walt Disney World in the early 1970s. One of the first things they did to prepare the land was to dredge a large swamp and create Bay Lake, a large body of water just east of the Magic Kingdom where the Contemporary hotel stands today. Bay Lake also extends north to a maintenance area where boats are kept at a boat dock just behind the Magic Kingdom.
Back in the 1970s, the buildings and parking area near this dock where the main operations offices for the Magic Kingdom. Late at night, employees headed toward their cars would see a ghost of a man dressed in a pilot's uniform walking around near the dock and lake area. As individuals, they would report the sightings to Disney Security but they were unaware that anyone else had seen the ghost too.
A while later, a satirical company newspaper mentioned the ghost. The employees who had reported the sightings suddenly became aware that others had seen the ghost too. The uproar became so large, Disney Security had to admit they had multiple sightings reports and they started researching what was going on. They discovered that while creating Bay Lake, workers brought up the wreckage of a large engine. Further research discovered the engine belonged to a WWII training airplane that had gone missing in the 1940s.
As it turns out, the Kissimmee airport, which is less than twenty miles tothe southeast, was once a training base for WWII pilots. Military reports show that a single pilot was training near what is now Bay Lake and crashed. No one ever knew what happened to him.