Herman quoted a few times in this article:
Is helmet communication coming to college football?
“The immediate advantages would be being able to communicate with my quarterback in the middle of a drive. That’s really cool,” Herman said. “And to be able to tell him things other than just what play we’re calling, even if he’s just hearing my voice or (offensive coordinator) Major Applewhite’s voice saying, ‘Hey, calm down,’ giving him some form of instruction in the middle of a drive, I think is pretty critical.”