Known as "Mark from Michigan," Mark Gregory Koernke (pronounced "Corn-key" /ˈkɔɹn.ki/) (b. 1957) was, in the early 1990s, a prominent militia activist and shortwave radio broadcaster. As an early proponent of the black helicopters conspiracy theory, he was largely responsible for popularizing it[1] in appearances on Tom Valentine's radio show and in public speeches which were widely circulated on videocassette. He was host of his own radio program, "The Intelligence Report"[2] on WWCR until the station indefinitely suspended his broadcasts "to get the gasoline off the fires" after the Oklahoma City bombing.[3] Shortly before his suspension, Koernke had suggested that authorities were setting up Timothy J. McVeigh for assassination.[4]In April of 2001 he was sentenced to three to seven years in prison for assaulting police, resisting arrest, and fleeing from police in a car chase.[5][6]