New defensive coordinator Mike Pettine says we only saw about five-percent of the Packers’ defensive plays during the preseason. Another 40-to-50 plays are being installed before Sunday night’s game against the Chicago Bears. Coming into the 100th season of professional football in Green Bay, the Packer defenders are trying to establish an attitude. They’re saying things like Bears linebacker Khalil Mack isn’t the only one able to get to the quarterback. Lots of new, hungry players are ready to go, with veteran leadership from people like Clay Matthews. He says teammates on his side of the ball are trying to set an identity for the upcoming season.