The killer left shoe prints in the dirt. The print matches military issued shoes. Lets say hes in the Navy. If you go to youtube and type How Sonar Works, then you might consider that the Zodiac sign may have nothing to do with astrology. Its a RADAR SCREEN used on Navy ships. Its the Zodiacs clue that hes a Navy man. Also the killer wanted to taunt police. In one of his letters he said he wanted to kill school kids as they bounced off the bus. The word bounced may be another clue. Sonar signals or waves bounce. These are the reasons I believe the Zodiac Sign was really the image of a Radar Screen.It was a clue that was overlooked. IMO
