It's no secret Seahawks fans are crazy about their club and there's perhaps no better symbol of one's dedication to Seattle's NFL team than the 12 Flag.
The Seahawks' loud and proud fanbase - commonly referred to as the '12s' - gives the team an unrivaled home-field advantage at CenturyLink Field. The Seahawks even retired the No. 12 jersey in 1984 as a tribute to the League's best fans and in 2003 the team started a gameday tradition by raising a giant 12 Flag before kickoff.
Outside of gameday, Seahawks faithful have been known to fly the 12 Flag in pretty crazy places, one of which was seen at last year's men's World Cup in Brazil. With the women's World Cup Final between the United States and Japan taking place less than three hours north of Seattle in Vancouver, B.C. this past weekend, it provided a natural setting for the Seahawks 12 Flag to pop up once again.
In the women's World Cup Final highlight video embedded above, see if you can spot the 12 Flag around the 1-minute to 1-minute and 30-second mark behind the Japanese goal, most noticeable as the crowd celebrates Tobin Heath's goal in the 54th minute.
But 12-Flag waving soccer aficionados weren't the only ones celebrating the United States' 5-2 World Cup Final win. Several Seahawks players also got in on the action by voicing their support on Twitter.
Update: The 12 Flag bearer, Bobby Kulvanish, has been found. And it appears he wasn't alone..