Cowboys hire former NFL head coach, Packers' DC to help fix struggling defense

Brian Schottenheimer is turning to a familiar face in an effort to improve his struggling defense. On Monday, Schottenheimer announced the hiring of Mike Pettine as the Cowboys' new senior defensive assistant. It was one of the upcoming changes Schottenheimer alluded to amid the Cowboys' 2-3 start to the season. Pettine, 60, worked alongside Schottenheimer when they were both coordinators under Rex Ryan with the New York Jets . In both 2009 and 2010, Pettine's defense helped the Jets get within a game of the Super Bowl .