Check out the NFL at BleacherReport.comTraining camp is under way for all 32 NFL teams, and we are one week away from the first preseason game of 2013.Here’s a look at the biggest question surrounding the 10 key positions/areas around the league. We’ve combined the offensive and defensive lines as opposed to separating them by positions like tackle, guard, defensive tackle or defensive end. Cohesion up front on both sides of the ball is crucial.Some of the questions raised regard talent, while others revolve around availability. In any case, they are areas to keep an eye on until the start of the season. We will see how well each club attempts to rectify the situation.Finally, a big thank you to Pro Football Focus (subscription required) for its outstanding statistical analysis...http://bleacherreport.com/articles/1710476-the-biggest-nfl-training-camp-question-mark-at-every-position