NASHVILLE, Tenn. -- Our very first indication of what the Titans defense would be under Mike Vrabel was "front multiplicity and coverage consistency."

But we learned one key piece of that front will be planted in one spot doing his thing, not moving around as he did in the past.

Jurrell Casey made a surprise visit to our Facebook Live/ Periscope Saturday afternoon and it came up in our short discussion.

I asked him about his personal goals for the season.

"I've got to get back to double-digit (sacks)," he said. "I'm an all-time 3-technique from here on out, so I've just got to get back to it. Last year I was everywhere. I played 3-technique, 5-technique, played 6, played 4i. This year I can play my ground, play what I am going to do."

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Casey can certainly still flip sides, but that tells us it's the people around him who will be making for front multiplicity, which he goes to work on starting from the outside shoulder of a guard, trying initially to get into the B gap between that guard and the tackle next to him.

Those other spots he spoke of: A 5-technique aligns on the outside shoulder of the tackle, a 6 is wider than that, a 4i starts on the inside shoulder of the tackle.

Here is a good piece on the defensive line positions, complete with a good illustration, from Inside the Pylon.

Here's the whole Periscope that includes Casey's visit.