During the 2015 season the defense has been the biggest inconsistency for the Pittsburgh Steelers. At times, the defense has shown flashes of greatness by coming up with big turnovers at big moments. Mike Mitchell’s interception of Arizona Cardinals quarterback Carson Palmer in Week 6 with the game on the line for example. At other times the defense has been dreadful, you don’t have to go back any further than last week’s loss to the Baltimore Ravens to see that. Defensive coordinator Keith Butler was asked on Thursday about what specifically he didn’t like from his defense on Sunday.