In 2013, fans of the Seattle Seahawks cheered at the top of their lungs,
recording a 137.6-decibel reading. This is louder than a jet taking off!
Extreme fans became known as "12s" when Seahawks president retired the
number 12 jersey from game play in recognition of diehard Seahawks fans.
Get pumped by reading this high-interest title on the Seattle Seahawks!