The projector is not the Soviet Union.I think, "The projector caused the incident for the purpose of assassinating Congressman Larry McDonald who tells truth using the argument between cold wars of those days."
Because, other memberes of Congress including Sen. Jesse Helms must not forget to be able to give doubt as they are told in advance.That the airplane deviated from the route remarkably and flew can be giving doubt the incident.
about that the Soviet Union attacked Korean Airlines flight 007(in Japanese)
http://hiroshima.cool.ne.jp/h_sinobu/daikannkoukuukigekitui1.html 