For all the optimism, the Chicago Bears are facing some familiar questions.

Many center on the offensive line.

Tackle Chris Williams sees that as a challenge and says they will work hard every day.

The protection could go a long way toward determining whether the Bears meet their goals. They believe they have the talent to make a run to the Super Bowl after adding Pro Bowl receiver Brandon Marshall and depth throughout the roster, but the image of Jay Cutler being driven into the turf is difficult to shake.

So is the fact that the line has ranked among the league's worst the past few years. On a team with most starting spots set, Williams is competing with J'Marcus Webb at left tackle.