Pettine, 50, spent five years as a defensive coordinator under Rex Ryan for both the Jets and Bills prior to getting a Head Coach gig with Cleveland. His defenses under Ryan consistently ranked in the top-10's. Pettine is known as a very direct and fiery person. Players respond well to his bark because he understands how to infuse discipline. This, in my opinion, is more up the alley of what the Redskins need in a defensive coordinator.
Of course, Pettine is a 3-4 guy, so Washington would remain in that scheme if he were to get hired. He would be the most legit 3-4 coach Washington has had since switching to the scheme in 2010. He's a guy who isn't afraid to blitz and send aggressive packages. I would personally approve of this hire.
You can find Emmanual on Twitter @manny_benton.