 When Ruppelt interviewed the tower personnel several days later, they insisted that they had been mistaken and had merely seen a bright star.However, when Ruppelt checked an astronomical chart he found that there were no bright stars over the station that night, and that he had "heard from a good source that the tower men had been 'persuaded' a bit" by superior officers to claim that their sighting was merely a star.There were also witnesses who claimed to see structured craft and not merely "glows" or bright lights.