 A few weeks after, Seattle re-gained the record by reaching a noise level of 137.6 decibels.Chiefs fans have reclaimed the record once again on September 29, 2014, on Monday Night Football against the New England Patriots, the fans recorded a sound reading of 142.2 decibels.When the franchise was based in Dallas, the team conducted their inaugural training camp at the New Mexico Military Institute in Roswell, New Mexico.