The Atlanta Falcons will be shopping for a running back. That's no great secret. What comes up again and again, here and elsewhere, is the idea of going for a free agent running back. Ahmad Bradshaw. Reggie Bush. Steven Jackson. What all these players have in common, of course, is a history of success in the NFL. When you think about replacing Michael Turner, one of the great backs in the team's history, you want it to be a player who you know will give you quality runs. But the NFL isn't the league of expensive free agent running backs anymore, and the Falcons aren't a team built around a power ground game.