Jason Witten doesn't want the Cowboys to let a possible Super Bowl slip away. Entering his 10th season, the tight end is aware that the clock is ticking. "It goes fast and I will be damned if I let this opportunity slip away and not come away with a championship," Witten said. "It has been a heck of a run. But it's time we grab it. That goes for all of us, the core group of us. That is what coach (Jason) Garrett has talked about. This group is trying to do it."