Tradition, consistency, stability. These are some of the values that have come to define the Pittsburgh Steelers as an organization during the Super Bowl era, and no measurement quantifies that better, short of the steady presence of the Rooney family, than in the line of succession at head coach from Chuck Noll in 1969 to Bill Cowher in 1992 and then to Mike Tomlin in 2007.
Each of them, at least after this year, will have coached the team at least 15 seasons, and have taken them to the Super Bowl at least twice, while adding at least one trophy to the display case, with their combined efforts contributing to their being the most successful franchise in the Super Bowl era short of the New England Patriots.