Defensive expert who earned his first NFL head coaching position with the Indianapolis Colts in 2012.
He had his first defensive coordinator position with UNLV in 1991.
He began a battle with leukemia after being diagnosed with the disease at the beginning of the 2012 NFL season.
He married Tina Pagano, and has a brother named John, who is an NFL defensive coordinator.
He helped the Colts reach a 2012 AFC playoff appearance with rookie quarterback Andrew Luck.