It's not often you see it, but John Harbaugh has been exhorting the fans to make noise in the waning minutes of the first quarter,

With the Ravens ahead 7-0, the Ravens coach began shouting and windmilling his arms, with the crowd responding with a loud roar. Several of the Ravens assistant coaches have been calling on the crowd to make noise, too.

Guess the noise level isn't the same when 71,000 fans are bundled up in winter gear, including gloves and mittens, to ward off the 20-degree temperatures.