Dom Capers is spearheading the Green Bay Packers shift to the 3-4 defense, a job that he has prosperously performed many times throughout his honored career, including successful stints in Pittsburgh, Jacksonville, and most recently Miami.
But even an experienced, tireless man like Capers can't do it alone. He will need a little help from his friends.
Mike Trgovac joins the Packers via the Carolina Panthers, where he served as defensive coordinator for each of the last six years.
He is taking a step down on the coaching ladder by joining Green Bay as their defensive line coach, but Green Bay was the first team to contact him after he declined to extend his stay in Carolina.
He jumped at the opportunity to both bring a respectable defense back to Green Bay and spend more time with his family by taking a step back from his former coordinator duties.
He will be instrumental in the defensive line's transition to a more physical and run-stopping brand of play.
Being rookie B.J. Raji's best friend, lighting a fire under both Justin Harrell and Johnny Jolly, and sorting through the many defensive line candidates for one or two roster spots will be among his main responsibilities.
Winston Moss is the only defensive positional coach returning to the team. He also returns as the assistant head coach after he fell short during the offseason in his attempted rise to the crown jewel of coaching jobs, NFL head coach.
He reportedly interviewed to be the head coach for both St. Louis and Oakland, but both teams went in a different direction.
His plate is full enough in trying to convert Nick Barnett and A.J. Hawk into 3-4 inside linebackers.
The front office is hoping that he has no issues meshing with the new defensive regime that Mike McCarthy is implementing.
Kevin Greene is entering into the first coaching gig of his post playing career. And what a career it was.
Greene's sack total ranks third in NFL history, and he successfully made the transition from defensive end in the 4-3 to outside linebacker in the 3-4 in order to obtain that bit of history.
Capers has brought him aboard in order to inject the tenacity, knowledge, winning attitude, and work ethic that he showed during his playing career into teaching the outside linebacker position.
The young players, namely Clay Matthews Jr. and Jeremy Thompson, are expected to grow leaps and bounds under the tutelage of Greene.
Joe Whitt Jr. became Green Bay's defensive quality control coach last year after spending a year as an assistant defensive backs coach for Atlanta. He has been promoted to cornerbacks coach for the 2009 season.
He will be in charge of developing Patrick Lee, Tramon Williams, Jarret Bush and Will Blackmon while also teaching new zone techniques to the entire cornerback cast.
Mike McCarthy has shown a lot of faith in Whitt, and Whitt has rewarded his boss with hard work and dedication.
His current stint in Green Bay could be just the start of a great coaching career.
Darren Perry joins the Green Bay staff as the safeties coach, and he brings plenty of expertise to justify the hiring.
He played safety in the NFL for nine years and has spent his entire seven year coaching career working with defensive backs in some fashion.
He boasts a resume that includes having a hand in the development of Troy Polamalu in Pittsburgh and Nnamdi Asomugha in Oakland.
The Packers won't come right out and say it, but they are hoping the Perry magic rubs off on either Atari Bigby or Aaron Rouse.