Here's someone's (https://athlonsports.com/nfl/10-greatest-defenses-nfl-history) list of the top 10 NFL defenses of the past 60 years:
1. 1985 Chicago Bears
2. 2000 Baltimore Ravens
3. 1976 Pittsburgh Steelers
4. 2013 Seattle Seahawks
5. 2002 Tampa Bay Buccaneers
6. 1962 Green Bay Packers
7...