The Seattle Seahawks are a professional American football franchise based in Seattle, Washington. The Seahawks compete in the National Football League as a member club of the league's National Football Conference West division. They joined the NFL in 1976 as an expansion team. The Seahawks are owned by Paul Allen and are coached by Pete Carroll. Since 2002, they have played their home games at CenturyLink Field, located south of downtown Seattle. They previously played home games in the Kingdome and Husky Stadium.
Seahawks fans have been referred to collectively as the "12th Man", "12th Fan", or "12s". The Seahawks' fans have twice set the Guinness World Record for the loudest crowd noise at a sporting event, first registering 136.6 decibels during a game against the San Francisco 49ers in September 2013, and later during a Monday Night Football game against the New Orleans Saints a few months later, with a then record-setting 137.6 dB.