What is the Patriots' Greatest Strength on Defense?

Heading into the 2013 season, the New England Patriots are expected to have a vastly improved defense as a whole. New England's defense is still a young unit, but it did a lot of growing in 2012. The team also supplemented the youth by bringing in veterans such as Adrian Wilson and Tommy Kelly.

That being said, this morning, I wanted to open up a question to the community: what do you think is the Patriots greatest strength on defense heading into this season?

In my opinion, I look at the linebacking corps as the unit's greatest strength. The unit has an awesome blend of size, athleticism, experience, and disruptive playmaking ability. The three starters - Jerod Mayo, Dont'a Hightower, and Brandon Spikes - all have a unique skillset that compliment each other well. While they may not be the strongest in coverage, they do have instincts in that area. And furthermore, they should be nearly impossible to run against as all three have the ability to stack and shed against interior offensive lineman.

I should also quickly point out the presence of rookie Jamie Collins, who figures to add another dynamic to this group. Collins has been a turnover-forcing machine in training camp, and could play a big role on the Patriots defense from day one of the regular season.

That being said, what do you think is the Patriots greatest strength on defense?