The Dallas Cowboys are saying all the right things about communication, leadership and accountability on defense — but now comes the hard part.

On this Friday edition of The Dallas Cowboys Daily Blitz Podcast on FanStreamSports.com, IndyCarTim breaks down Christian Parker’s early impact on the Cowboys defense, the green-dot communication battle, DeMarvion Overshown’s leadership, P.J. Locke’s role, Jaishawn Barham’s development and why this new defensive energy has to survive when real football begins.

The Cowboys are talking like they’ve fixed one of last season’s biggest problems. Now they have to prove it.