Denver-based credit union posts photo on social media of CEO wearing a Seattle Seahawks jersey after Broncos Super Bowl loss.
Washington-based Northwest Association offers local smoked salmon; Colorado-based Mountain West Association bets buffalo steaks.
Three-month campaign included staffers in team jerseys and AstroTurf in branches at San Antonio-based credit union.
Denver and Seattle-based credit unions agree losing city's CEO will wear winning city's team jersey for a day.
Incident at Arrowhead Stadium year to the day after Jovan Belcher murder-suicide at same location.