With headliners like Cody Johnson, Jon Pardi, and Thomas Rhett, this year’s CMC Rocks festival is shaping up to be massive.

Tempe officials said 78-year-old Ron Tapscott failed to obtain a special event permit at a park and his group had been warned it would be cited.

Spoiler alert: It’s in the middle of nowhere, Montana, and it’s called Medicine Rocks State Park. Nestled in the southeastern ...