Seattle's defense had taken charge, and the Seahawks led the 2015 Super Bowl by 10 points.
Then Tom Brady torched that unit in the fourth quarter - a unit coordinated by Dan Quinn.
Yes, the most memorable play in that game was Malcolm Butler's goal-line interception when the Seahawks appeared ready to successfully defend their title.
Now, though, with the matchup of the Falcons against the Patriots in this Super Bowl, the memory of Quinn's defense struggling in the clutch is vivid.
And Quinn doesn't exactly have the ''Legion of Boom'' on his side, although Atlanta's defense has shown staying power.