[1] As an early proponent of the black helicopters conspiracy theory, he was largely responsible for popularizing it[2] in appearances on Tom Valentine's radio show and in speeches which were widely circulated on videocassette.
He was host of his own radio show, "The Intelligence Report",[3] on WWCR until the station indefinitely suspended his broadcasts.
[4] Shortly before his suspension, Koernke had suggested that authorities were setting up Timothy J. McVeigh for assassination.
After serving a three-to-seven-year sentence in prison for assaulting police, resisting arrest, and fleeing from police in a car chase, Koernke claimed that he had been set up by John Stadtmiller, co-founder of the Republic radio network syndicating his show.
[13] In addition to radio Mark Koernke has many training videos on his YouTube page under the name Libertytreeradio.