Three NFL teams are being fined $250,000 each because their coaches were not wearing face coverings during games on Sunday, a league source told CNN Monday. The teams facing sanctions are the Seattle Seahawks, the Denver Broncos and the San Francisco 49ers. The three head coaches of those teams -- Seattle's Pete Carroll, Denver's Vic Fangio and San Francisco's Kyle Shanahan -- were each fined $100,000, the source said.