Matthew Stafford directs one of the NFL's most potent passing offenses, but does a suspect Detroit Lions secondary stand a chance against the opposition? Chad Reuter reports from training camp.

In an attempt to fortify their secondary, the Lions agreed to terms with safety Sean Jones on a one-year deal. The former second-round draft pick spent the past two seasons with Tampa Bay.

Jim Schwartz & Co. have done a great job upgrading the Lions' defense across the board. The only thing holding back Detroit from boasting one of the top units in the league? A suspect secondary.

Lions LB Tulloch living the dream with 5-year deal

AP source: Lions agreed to 5-yr deal with Tulloch

2012 NFL Free Agents List

2011 NFL Free Agents List

If the Vikings don't keep Sidney Rice, the Bears could make a move for the talented receiver in an attempt to stay relevant.

Veteran free-agent safety Erik Coleman has agreed to a one year deal with the Detroit Lions, according to a league source.

The Atlanta Falcons likely will release safety Erik Coleman sometime Tuesday, according to a league source.

So what if the Falcons are coming off back-to-back winning seasons for the first time in franchise history? They want more. Find out why Atlanta is under self-imposed pressure to contend.