Sparkz

Iv been reading up on all that people have dug up and was wondering on something i came across. With everyone fixed on the Mystery Trailor, iv noticed some strange about the last Transformers Trailor. When Sam Witwiki gets into the Camaro at the dealer ship roughly 28 secs into the trailor, when they show the radio turn on, the words "CODEBLACK" along with a symbol appear under the number 9 on the radio dial. I know that these two movies are different but are both brought to us by Paramount Pictures. After a long search for anything that sounds remotely close to a secret film failed, i wanted to put it out there for other to cut a part. I hope to find that i was just missing a piece to the puzzle and that some one else can decipher what the meaning of "CODEBLACK" means, if anything.