The Vikings' Mike Zimmer brings an extroverted and hard edge to coaching.
The Green Bay Packers' NFC North Division changed radically in the past couple of weeks.
Two division rivals, the Minnesota Vikings and Detroit Lions, hired new head coaches who will deploy new offensive and defensive schemes that will have the Packers' coaching staff putting in extra hours this offseason preparing new dossiers.
More importantly, the Vikings' Mike Zimmer and the Lions' Jim Caldwell bring distinctly different personalities than their predecessors that are sure to change the culture of their teams. ...