Lions HC Dan Campbell grooming Ben Johnson, Aaron Glenn [Video]

Whether they know it or not, Dan Campbell is constantly grooming Ben Johnson and Aaron Glenn. Almost every week, the Lions’ top assistant coaches attend game management meetings with Campbell where they review situational plays from around the NFL and discuss how they would approach each scenario themselves. Johnson calls them “spitball” sessions.

“Hey, what would we do if we were in this two-minute drill with this situation? AG, what would you be thinking with your call? Ben, what would you be thinking with your call? There’s a lot of banter back and forth, and I think that’s really how you grow as a coach,” Johnson said. “You get put in those type of spots that if you’re not challenging yourself and asking yourself those tough questions, you wouldn’t normally get to.”

Johnson, 38, is the hottest offensive coordinator in the NFL. Glenn, 52, is one of the hottest defensive …