In 2012, American political blogger, author, filmmaker and published musician William Shackleford performed a polynomial decompression of the Gray Audiograph recording of one of the radio channels for the Dallas Police Department on the day of the assassination of John F. Kennedy. discovering new audio of the possible shots that killed Kennedy and communications from the assassins themselves. The audio in question was discovered because of a phenomena called radio frequency bleed over that resulted from a stuck open microphone belonging to one of the Dallas Police Department deputies who was riding a motorcycle behind the Kennedy motorcade. This radio bleed over possibly captured radio transmissions from the assassins themselves and it has been speculated that CIA was involved. The new audio discovery possibly captured the actual shots that killed Kennedy, matching the pattern of the shots reported by many witnesses, such as Lady Bird Johnson, wife of Vice President Lyndon Johnson.