Opera singer Renée Fleming sings the national anthem before the NFL Super Bowl XLVIII football game between the Seattle Seahawks and the Denver Broncos Sunday, Feb. 2, 2014, in East Rutherford, N.J. (AP Photo/Charlie Riedel)
Denver Broncos' Trindon Holliday (11) runs from Seattle Seahawks' Derrick Coleman (40) during the first half of the NFL Super Bowl XLVIII football game Sunday, Feb. 2, 2014, in East Rutherford, N.J. (AP Photo/Matt Slocum)
Thunder leads the Denver Broncos players onto the field before the NFL Super Bowl XLVIII football game against the Seattle Seahawks Sunday, Feb. 2, 2014, in East Rutherford, N.J. (AP Photo/Ben Margot)
Fireworks burst over MetLife Stadium before the NFL Super Bowl XLVIII football game between the Seattle Seahawks and the Denver Broncos, Sunday, Feb. 2, 2014, in East Rutherford, N.J. (AP Photo/Seth Wenig)
Opera singer Renée Fleming sings the national anthem before the NFL Super Bowl XLVIII football game between the Seattle Seahawks and the Denver Broncos Sunday, Feb. 2, 2014, in East Rutherford, N.J. (AP Photo/Ted S. Warren)
Queen Latifah sings "America the Beautiful" before the NFL Super Bowl XLVIII football game between the Seattle Seahawks and the Denver Broncos Sunday, Feb. 2, 2014, in East Rutherford, N.J. (AP Photo/Matt Slocum)