FLOWERY BRANCH — Atlanta coach Mike Smith is looking for new defensive coordinator Mike Nolan to help the Falcons increase their third-down stops. In a 25-year NFL head coaching career that has included stops as a defensive coordinator with the Giants, Redskins, Jets, Ravens, Broncos and Dolphins, Nolan has built a reputation for scheming to apply pressure on opposing quarterbacks — and receivers — by making them have to guess. Some of the Falcons’ defensive statistics were good last season.