The 12s (or formerly the 12th man) refers to fans of the Seattle Seahawks. Across the city of Seattle, fans often display a 12 flag in support of the team whenever the Seahawks make a postseason appearance or prior to the season opener.[1][2][3][4][5] Fan devotion grew immensely during the early years of the millennium, resulting in engineers designing Lumen Field to funnel crowd noise onto the field to intimidate opposing teams.[6][7] Fan interest peaked again during the 2010s following the hiring of head coach Pete Carroll, in addition to the famous Legion of Boom defense propelling the franchise to win Super Bowl XLVIII.[8][9] In 2014, local sponsor Boeing even painted a 747 Cargo plane in a Seahawks' themed livery, with the number 12 on the tail, making its flight path into the shape of the number 12.[10][11]
^"The 12s". Seahawks.com. Seattle Seahawks. Archived from the original on February 23, 2014. Retrieved February 17, 2014.