For NFL offenses and defenses both, the lines are often where things succeed or fall apart. The ability to protect the quarterback and open the running lanes can be more important than the skill players, and it is the defensive line that has to stop the run and get pressure on the quarterback. The big guys up front may not get much of the glory, but they are key to winning or losing. Based on what we have seen so far from the Dallas Cowboys training camp in Oxnard, the team seems to be in very good shape on one side of the ball.